Creeper girl likes me...help this poor soul!?

The background: new girl comes to church for first time so I am friendly to her. She then continuse to obsess ove me for the next two years, even now that I have a girlfriend. I've made it pretty clear that I'm not into her but she won't stop. I don't want to be a wanker about it but now it's just plain creepy. Example: on roadtrip, my friend counted how many times she looked at me while I was asleep; the count was 47-48 after ten minutes with three long up and down stares.