OP, you know how to interpret this...
1 She is not very interested in you.
2 She doesnt want to have sex with you at the moment.
The thing is that you make it pretty obvious that you just want to fvck her. After the last date you should have offered a date that didn't involve the posibility of sex, but you didn't, you told her to come to your place.
Sometimes you need to step back a bit, and then step forward; you cannot and you must not step forward everytime and definetely not when she's getting cold feet.
Now, she didn't counter offer...ok, just let it be. Go do your own thing and do not contact her EVER. If SHE CONTACTS YOU in the meanwhile, ok, then you talk to her etc BUT YOU DO NOT ASK HER OUT. Why? because she's rejected you several times and she's shown little interest so you cannot keep displaying your interest when it is not reciprocal. If you did, her interest in you would go even lower.
So, just wait for her to contact you; if she does you talk to her like nothing happened but you do not ask her out. After this you wait for her to contact you AGAIN, and if she does, then you can ask her out, but she has to want you to do it. If you do it when she's not willing to see you, it is pointless.
Cheers.