Message Replying To

From anna, Age 15

hi, i weigh 112 pounds but my best friend wighs 210 pounds. she is very fat and she cant even go in the locker rooms to change in to her sports kit because she is afraid everyone will laugh at her. the other children are cruel to her as they hide her clothes and towels and pull down her underpants. she hates her body and she hate wearing a bathing suit. the other girls make fun of her big breasts and flabby belly. she is very distressed and i want to tell someone about this but she keeps on making me promise not to tell anyone. if i do she will never like me again. also when i ask her to go on a healthy diet plan she refuses and gets angry at me. i dont know what to do because i cant stand seeing my best friend suffer like this and i cant betray her trust. please help me