assalam walaikum.
try talking to her, shaitan influences us using beautiful words or playing with our emotions.
I've been emo, at first it was just fashion, i was doing my swalaat and everything, slowly i began to change, being rude with my parents, listening to music, i got even deeper, ive been smoking marijuana, drinking alcohol, taking psychotrop. well there was no difference between me and the kuffar, all this happen over one year or more.imsad
so please sister, do not let her follow that fashion or any other fashion, its sooooooo difficult to get out of it and return to Islam.
plz make duah for me