I wouldn't send her to boarding school. Think about it - she'll have access to money, either given to her by you or other people, right? She'll have unlimited access to all the things that she shouldn't, like buying diet pills. If she meets a boy there, it's possible that it could end up much as it has with her boyfriend. Boarding schools aren't what people think they are. They're basically the same as college, with somewhat stricter rules that the students always seem to find a way around. Same-gender dorms don't always remain that way.