DEAR ABBY: I'm private about my body. I'm not comfortable being nude in front of anyone except my sister, my best friend or, of course, my mother.

At slumber parties, most of the girls are very casual about undressing in front of each other. Because I am not comfortable with it, I change in the bathroom. (I'm the only one who does.)

Some of them let it be my business, but others make fun of me about it, which I find humiliating. I don't want to stop going to slumber parties because of this. How should I respond to their comments? It doesn't harm them, so shouldn't they just let it be my business? -- MODEST IN THE SOUTHWEST

DEAR MODEST: Of course it should be just your business. You have a right to march to a different drummer if you wish. However, the more you rise to the bait when being teased about being modest, the more it will happen. My advice is to smile and say, "OK, so I'm old-fashioned -- deal with it!" (It also couldn't hurt to grow a thicker skin.)

DEAR ABBY: I'm a 15-year-old girl in Indiana. My mom recently got out of an abusive relationship and I moved in with my friend. When Mom found a place to live, I joined her.

Now my friend is mad at me for leaving, and she's taking it out on my animals that are still over there. What should I do? -- SCARED IN BEDFORD

DEAR SCARED: The most important thing you should do is recognize that the relationship you have with this "friend" is also abusive. She is abusing your animals in an attempt to control you in the same way your mother's abuser tried to control her.

You must find another home for those poor animals as soon as possible. If that's not feasible, notify the animal rescue group or the nearest SPCA so your pets can be placed in a safer environment.

DEAR ABBY: I have a dear friend, "Karen," whose daughter grew up with mine all through elementary and high school. They are now both in their 20s. Karen's daughter, "Trish," decided to become a stripper and left home to live with an abusive boyfriend. She is now back home to get away from the man, and Karen told me that Trish had to strip a few more times to pay off some traffic tickets or she'd lose her driver's license.

Abby, Trish has been calling my daughter and has been over to my house a few times since her return. I told her and her mom that I don't want her over here because her boyfriend has been threatening to harm her and anyone who is with her.

Now Karen is upset with me! She says I am "insane" to think he would harm me and my family. She said if he tried to harm Trish it would be at the club where she dances. Abby, I lived through violence as a child, and I know you can never predict which ones will follow through on a threat like that. I don't want to lose my friendship with Karen, but I cannot allow that kind of scene back in my life. What can I do? -- TORN IN FLORIDA

DEAR TORN: Stand your ground, that's what. Your friend Karen is dreaming if she thinks she can predict the actions of a sociopath or a psychopath -- and that, in my opinion, is what an abuser is in most cases.

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DEAR ABBY: I recently accepted the honor of raising my 10-year-old nephew, "Matt." I have a daughter, "Sierra," who is also 10. Sierra's father is being a jerk about my raising someone else's child. He claims that by having Matt in the house, I am "taking away" from our daughter. She calls him the brother she has always wanted.

Matt was in trouble in the past. He has issues because he has been passed around a lot. We're dealing with it as a family. Matt is getting used to the fact that I am not going to throw him away no matter what he does, and he's straightening up. He's a great kid.

What should I do about the fact that my daughter's dad won't stop with the "he has parents, let them raise him" remarks? If I send Matt back, I know he'll end up in jail. He's doing well here. I told Sierra's father to mind his own business and I will handle mine, but he's being hateful about it toward me and our daughter. I know you'll have something good for me, Abby. Please share. -- CONCERNED AUNT IN NORTH CAROLINA

DEAR CONCERNED AUNT: Nowhere in your letter did you refer to "the father of your daughter" as your husband. In this case, that may be a good thing. It implies that he is not under your roof spreading his poison.

In most relationships, one party is more dominant than the other. In your case, I hope the dominant party is you, because you must draw a line in the sand that Sierra's father can't cross. The price he will have to pay for having a relationship with you and your daughter will be that he can no longer bad-mouth your nephew or your choice to raise him.

I know this isn't a decision that can be made lightly, but the question you must answer is: In the scheme of things, which "man" in your life is more important to you?

Good advice for everyone -- teens to seniors -- is in "The Anger in All of Us and How to Deal With It." To order, send a business-size, self-addressed envelope, plus check or money order for $6 (U.S. funds only) to: Dear Abby, Anger Booklet, P.O. Box 447, Mount Morris, IL 61054-0447. (Postage is included.)

DEAR ABBY: I am being sort of sexually harassed, and I don't know what to do. I'm 15 and my brother, "Joey," is 16. We live with our mother. Our parents are divorced. Mom works, so we're home by ourselves in the afternoon after school.

Joey has a new friend, "Mike," who constantly makes sexually oriented comments to me. He has never tried to touch me, and I don't think he ever would, but the comments really bother me and I have tried to tell him so. He just laughs and says he means it as a compliment.

I have told Joey in private how much it bothers me and asked him to get Mike to stop, but he won't say anything. Joey is very meek and Mike is very domineering. Also, Joey has always had trouble making friends, and Mike is his only friend right now, and I think he's afraid of losing his only friend.

I stay out of the bedroom when Mike is here, but we live in a small apartment, so I can't really get away from him. But I don't feel I should have to hide whenever Mike is here. So far, I haven't said anything to Mom. Knowing her, I am sure that if I told her, she'd say Mike can no longer come over -- and that would be the end of the friendship. I don't want that. I just want the comments to stop. What can I do? -- EMBARRASSED IN BAKERSFIELD, CALIF.

DEAR EMBARRASSED: The next time Mike makes one of his off-color "compliments," tell him you don't like it and consider it degrading. Then tell him you want an immediate apology and his word that it won't happen again -- because if it does you will tell your mother, and he won't be welcome there again.

And if it happens again, follow through on your word. Your brother isn't "meek"; he's acting like a wimp by allowing Mike to disrespect you. And I have a strong hunch that Mike isn't coming over because he cares anything about your brother. I suspect he's there because he has a crush on you.

DEAR ABBY: I was married briefly five years ago. My ex-husband, "Hank," and I share custody of our soon-to-be 7-year-old son. As a result, we see each other frequently.

Over the last five years, we have had an on-again, off-again sexual relationship. The last time we had sex was three weeks ago. Literally the next day, his engagement announcement came out in our local paper. I was shocked, to say the least.

Hank is a pilot and travels every other week. His fiancee is a drug sales rep, and I assume she travels, too. I knew he was seeing her, but he always told me it was casual. The wedding is next month.

The other problem is, I am now two weeks late for my period. What should I do? I think she should know, especially if there is the possibility that I could be pregnant. -- CONFLICTED IN NISKAYUNA, N.Y.

DEAR CONFLICTED: Do you know for a fact that you're pregnant? Does Hank know? If the answer to both questions is yes, then his fiancee should be told that he has remained sexually involved with you. Hank appears to have no respect for women, or he wouldn't have been cheating on his girlfriend and having unprotected sex with you. If you're pregnant, he will be legally obligated to support the two children he has with you.

P.S. In the future when he's visiting "the children," please stop having sex with him. Being a single parent with two children is hard enough without adding a third.

To order "How to Write Letters for All Occasions," send a business-sized, self-addressed envelope, plus check or money order for $6 (U.S. funds) to: Dear Abby -- Letter Booklet, P.O. Box 447, Mount Morris, IL 61054-0447. (Postage is included in the price.)