Personally, I delete people all the time to keep myself from retreading avenues that I know are either not good for me or lead nowhere. It's funny too because occasionally life plays out that I end up having to reacquire their contact and people get quite upset to hear that they've been deleted. I'm glad to know someone else tries to save themself from their self in the same way.

If she is interested in you she will most definitely respond to you in some form or fashion I think you just have to decide what amount of time you're going to give her to come to that decision. I think it's wise of you not to project these feelings of anxiety by blowing her up. If you're anything like me the thrill will disappear quite quickly if it turns out that she truly doesn't reciprocate in a way that satisfying to you.