I like this girl and Oddly enough she likes me I need help on why she did the following?

I am in High School, and theres this girl I met 2 weeks after school started. She is fun cute energetic and just plain awesome. And going to the shallow end her body is a 10. She seems like the type who doesnt get out much, but spends most of her time socializing on the computer with friends. I find this great cuz I do the same, Then closing in on 2 weeks ago where we sometimes meet after school she tried to grab my manhood. I thought this was shocking coming from the girl I liked. She is not the type to go around molesting other guys so I figured that she likes me but is too afraid to admit it. We start doing some wierd stuff sometimes when ever we are alone. She smiles all the time and I know she likes me for sure and I feel that she trusts me to a point and her perverted mind cant get off the subject of ual encounters when were alone or when I talk about it. Shes prolly just hormonal but I find this very strange and willing to accept some kind of answer. I feel this isnt just a solo ual reason why she tends to get close to me but I know its not normal from other peoples perspective. We talk all the time and the other weekend we spend the whole day together. When we were walking just the other day I mentioned that my friend told me to ask her out and I told her that and she said "We are past the point of going out ya think?" and I was like...yeah. lol I guess one part of our relationship matured faster than the other portion? I wont be able to talk to her about it for another week so I need anyones insight on this subject..