WEll, as you prolly read so far 8) , im not the best advice giver. But i can tell you what i would do in this situation. I would try and find her number, and i would call her. Id say "hey whatsup?" and just have a normal converstaion, all while trying avoid the "how'd oyu get my number?" line. If she does ask you that, just be honest and say that you searched for it and sruff. She could take this as a sign of your interest in you, but as you said, she may also see you as obsessed. But that has never happened to me before. I mean, it'll be just one phone call right? I would try to set up some sort of date, and/or just see whats going on with her. I would also try and keep the conversation short. At least then you'll know whats up, and you'll have an answer,. I wouldnt wait, because you may just pass up a good opportunity. Never pass up a good opportunity.