I have a friend (12 years old; call her for the purpose of this Cassie) who is self harming. She comes to school everyday with a new bandage. She has told her dad, my friend (we’ll call her Gretchen), and me. Nobody at school seems to notice but me and Gretchen. When they do notice, she says she fell ice skating or some other excuse. It has gotten pretty serious, she is missing 5 periods of school to injure. She wants to stop but hasn’t. Her dad is in denial. Any advice?