My sister who is 25 years old just admitted to me that yesterday, while I was away on a trip, she tried to commit suicide by cutting her wrists and overdosing. I'm only 16 and I don't know what to do. She feels worthless, like she doesn't belong, like nobody loves or even likes her, etc... I told my mom something needs to be done but my mom is convinced that she is just trying to get attention, and that since my sister is an adult now, she needs to get help on her own. But I know she won't try to get help, and I don't know how to help her... What do I do? Please help.