Need help, don't know what to do

My cousin's doughter has been too close to me. She is about 15 and I'm in my 20's. I live far from them but we had a family vacation. On our vacation, she was too sweet to me. She even let me cuddle her a few times. There was a time that she was sleeping on me, embraced my hand and put it on her breast. I did not react because I was'nt sure if she knows what she was doing. In short, she was always finding a way to touch me. She was sweet to me since she was 12 when I visit her once a year. We were so sweet the whole week in our vacation but when spend time in my moms house everything changed. She even called me a pervert because I slept with her once even I did not touch her private parts but before we slept she said there is no problem if I sleep with her. We also had some fights and she was not sweet anymore. Then I went to my house and she followed with her mom a week later. We fought almost everyday but always reconcile but never been sweet again. I know when we were so sweet her mom was looking at us differently. On there last night they checked out from the hotel and spent a night in my room. I slept on the floor and let them sleep on my bed but when she woke up she asked me why did I sleep on the floor while there is still space on my bed? I did not answer but of course I don't want her to call me a pervert again. Now that they're gone my question is what do you think the reason that she was so sweet but all a sudden changed. It will be hard for me to ask her because she does'nt like talking on the phone. Please advice...

I would stay far far away, it sounds to me like you are asking for trouble. She seems manipulative and sneaky, and just the type to get you in some trouble.

Jason

I agree with SnowBoarder(Totally)!

she was being a caniving little minx, and her mom probably confronted her about it, that's usually the reason for a change like that, I'm currently "seeing" someone younger than myself, and I fing myself being very distant towards him when there are other people around. he kissed em in front of his best friend the other day, and I got really mad at him. soo I kinda know where she's coming from, except for the fact that you guys are related, so stay away from that. it'll cause too much trouble within the family, and a lot of unnedded stress.