If she's not interested... move on. Don't become the obsessive type.... it doesn't pay off over time, trust me.
She shouldn't allow you to be close to her, she's toxic to you. There's a girl in my town that 's like that over me I stay away from her. When I've been sick over women they usually stayed away from me to out of courtesy. The best thing I've found is try to find a similar girl to her your just fixated on this one girl right now because she's triggered something like a computer program in you but a similar girl might work to , I'd give it a try.
Do you have any rope ?. Or wire ?