HOW DO I KNOW IF A GIRL IS PLAYING ME?

So i met this girl 2 weeks ago she use to txt me everyday. I flirt with her physically and verbally whenever I see her. She sits across from me in cl and I always catch her glancing at me... After about a week I took her home from soccer practice we were communicating great and had a connection. Watched her body language as she spoke to me. She was playing with her hair as i drove and was gazing into my eyes and lips. I then got to her house and moved in for the kiss. Went halfway making her meet me the rest. She came in for the kiss. I then backed out and she wanted to make out. So I made out with her.. I then left. She does not text me a lot like she used to when she first met me.. And at school she is scared her friends will see us holding hands and kissing because she is Mormon. I then asked her to be my girlfriend and she replied were moving to fast but i like you though... We continue to hold hands discreetly at school but she never lets me land a kiss on her when in public around her friends.. But yet when its just her and I anything goes... She also acts different around her friends.. This is obvious because girls are in their state of domain... You should never approach them when they have friends unless you can remove them from their group... So someone please let me know if she is playing me or not...