Lady Puts Hair Remover In A Friend's Hair Relaxer After She Slept With Her Boyfriend

A Lady puts hair remover in a friend's hair relaxer after she slept with her boyfriend and now she thinks she has cancer and she is asking may she should confess or not.

She wrote;
"High school friend moved in with me until she got back on her feet. Fed her, clothed her, bought her a cell phone. She repays me by sleeping w/ my dude. SO, I put VEET in her perm and she's balding in patches. I feel bad cuz she thinks it's cancer. Confess?"