As always, I'm trying to compromise between what I know is best and what my kids want. My fourteen year old was invited to a party tonight. I told her she could not go, though I really do feel bad, knowing so many of her friends will be there... The girl hosting the party claims to be bi-sexual, and I have viewed (what in my opinion are) innappropriate pictures of the girl's mother (posted by the mother) on MySpace. I know that this is not a place that I want her to be. She will be sitting home, alone with her family, tonight. I know that I will hear all about how unfair I am. I'm really dreading it.
I've been known to tell my kids that I'm not interested in "fair." I'm in interested in safe and appropriate. I've also been known to tell them I don't have to justify to them why I make a certain decision regarding their activities (this only after they have argued with every reason I've given them - this is just a last resort to pure parental authority).
More sensitive mothers than I actually are able to express some sympathy for their kids' frustrations with these type of things. It's possible to stick very firmly to "no, you can't go" while still commiserating with them "I know it's awful and I'm sorry you feel so badly."
You've done good though. You've made a decision in her best interest based on the situation as you know it. You can't do any better than that! Just keep reminding yourself of that!