I've been working on this girl for almost two weeks and still no penetration. Last night I had two fingers massaging her g spot, I was eating her out like a pro and still, when I tried to go in for the kill she actually blocked her vagina with both hands. I did a freeze out and she got worked up but when I tried to put it in, she blocked me again. This repeated once more and then she said she had to go. I'm going to see her tomorrow. What should I do the next time she does this?