Girl invites me to go on vacation with her and her friends. Does she like me or what?

I asked this girl out before and she says no. She has a boyfriend. She now is inviting me go with her and a four day vacation. Where I will be the only guy there. The group consists of myself, her, her sister, and a friend. We are all staying in one room. Now she is constantly talking to me and even hugging me. She is dating this other guy.
Updates
+1 y
I told her I was thinking about about not going. She then seemed to get upset. We work at the same place, and my boss came told me I had off for the trip. She had put in a request with out telling me.
Girl invites me to go on vacation with her and her friends. Does she like me or what?
Post Opinion