What should I do? (read description) (1)

Ok, so I like this girl, but I haven't seen her in, like, 8 months. I don't even know her last name! D-: I don't know how to contact her either, but I have a rough idea. I don't have to fear rejection because of sexuality (she is pansexual), but I'm in Middle School and she is in High School. My mom disapproves me being bi (she actually thinks I'm lesbian at the moment and hates me for it), so I cant tell her, and the counselor at my school is on maternity leave. help please!