Would this put u in a mental institution?

This girl I know and went to school with, all of a sudden disappeared. Everyone said she was but in the mental institution because she is diabetic, the kind were you check it all the time and need and insulin machine. So they say she was not taking care of it and ended up in the hospital. I know over the last year she had been in the Hospital several times for her diabetes, but that's all I know. Well not 6 months later she says shes out, but never specified were she was.(can't blame her). But do you think this would land you there? If so out of curiosity but kind of stuff are you allowed in your room, because is that considered suicide?