So I've only had contact with this girl through snapchat and she seems delfective of any sort of advance I make. I ask her about her, she shuts me down, i try to be a little fun, she shuts me down. The odd part is that she keeps messaging me first, and in the past she's just sent me snaps of her in her underwear. Is she interested? Am I missing cues? Or does she just want the attention you when someone awnsers a snapchat?