I need help! like seriously answer.?

This isn't just about her looks. She is doing a lot of stuff because she thinks it will make her popular. So she got popular but she isn't happy because she's being somebody she isn't. She needs to change her behaviour not her hair color. Never mind the weight . She really needs a friend and she has very low self esteem. Tell her she is a worthwhile person and she can go back to how she was. If those new friends leave they were not really good friends to begin with