Terminator, to be honest, your message shows that you have some one-itis to this chick. It's absolutely acceptable to like a girl but in this case you have already sacked with this particular girl and the more you try to make things better, the worse the result.
I would advise you to let this girl go and to not try her again.
Mystery Method or any other book-stuff are the last things I'd use with this girl.
Try to make yourself a more indifferent and "natural" dude and if/when you some day accidentally meet this girl again, SHE will be the one chasing when she sees you've changed (she sees you're not trying her anymore). So don't try this girl anymore. Ever. If she someday gets attracted to you, let her do the seduction and even then, you should keep your frame. You yourself shouldn't give any effort to this girl anymore
The more you do the old hard-trying stuff to her, the more freaked out she will be.