Sons friend taught him to voluntarily throw up

My son is 5. He often plays with the girl across the street who is 8. Last night he told me he was trying to make himself throw up because she told him how to do it. She’s a very picky eater and talks often about wanting a boyfriend. I don’t want to jump to conclusions about an eating disorder or low self esteem. However, in my experience, my youngest sister began body shaming herself at age 5. She eventually developed an eating disorder. I discovered my middle sister had an eating disorder when we were in elementary. As the oldest, I spent a lot of time trying to model healthy habits for their sake. I am predisposed to need to check up on the neighbor and encourage her to value her heart and mind. My question is, should I let her mom know about the incident? In a “hey I would want to know if it was my daughter...” type of conversation. Or do I ask her directly about it? Possibly something like: son told me you know how to throw up on command. I just want to make sure that isn’t something you do often. Your value comes from your heart and mind, not your body. (Insert story about sisters).TLDR: Neighbored taught son to throw up food. Want to know how to follow up the situation and encourage a healthy self esteem. via /r/Parenting https://ift.tt/2LHKcSX