I met this girl at a music festival a while back and right now, she and I have 81 day streak. We met through a mutual friend and it seemed like we hit it off very well. Whenever I talk to him, he usually says something about how she is always talking about me. I say this because we live two hours apart, so unfortunate I can't really do anything with her.

Anyway, whenever we snap, she isn't the quickest person, however at night, she usually sends me snaps of her lying in her bed with her bra on and, it seem obvious and intentional, with her cleavage as pretty much the center of the picture. How do I escalate it from that to the real thing without actually blatantly asking for nudes?