hey sorry i haven't replied to this earlier, i haven't been on much!
i have trich and i also self injure and i would recommend not bringing it up with your daughter. i know that whenever my mom does i get into a bad mood. i can be really happy but if she's like, have u cut today, or have you pulled, i immediately want to scream! i don't know why and i know that she's only trying to help, so your daughter also knows that too, but for some reason it's just really annoying!
my mom took me out to the movies the other day, just us, and it was lovely! Don't say why you're doing it (because you want her to feel better or whatever) just have a little mother-daughter time

it works on me so hopefully it'll work on her
hair will grow back, assuming she hasn't been at this for years, so i wouldn't worry too much about that yet, and don't suggest she does it somewhere else because that might start another "addiction" to it in another place. my one friend has the most horrible scars on her legs from pulling.
i think you're doing really well mom!
xxx