Talk to her teachers about this matter. I guess they can help you with it.

I agree with the guy above me. Try talking to your teachers daughter because they know your daughters behavior in school.

is there any other reason that can be the source of what she become? actually they don't become like that not because of their family. broken family for an instance. by this they would probably need attention from a parents and by this they will do such act to catches up some attention.

you should do something before it will cause more trouble. your lucky that your daughter was expelled not by being out of school because they are pregnant. you should talk to her one on one, and ask her what happen to her that makes her become like that.

heart to heart talk is not effective as it seems. before yes but that's was long time ago. if she don't want to go to school anymore then let it be. don't force her and one more thing. don't compare your daughter with anyone else.

You got nothing to do with it. so just let her on her choice. If you force her  you don't know what might happen.

as much as possible, lead her to the right direction. if she insist then it's her choice.