MtF help?

Frankie • Hella bad, hella rad, hella gay.
My good friend is MtF and I'm trying to help her (her parents are incredibly unsupportive) but I don't know how. I dress her up and teach her how to do her makeup, last week I dyed her hair purple. Sometimes, she'll even let me take her to the women's restroom. I just don't know how else to help her. Advice? 
(MtF=male-to-female, transgender)