OK, first off I'd like you to hear from some females on this site-see what they have to say. DO NOT do what I originally told you to do (not that I think you'd be that stupid)

She has possibly done something with someother guy, it might even be a revenge thing that she was playing with and then felt guilty about (like I'm sure you did when that girl kissed you, hence why you told your gf about it)

She may have been saying a lot of those things about you not really liking her because you haven't spoken much while she's been away.

The biggest difficulty that this situation presents is that she is away from you. It makes it REALLY hard to understand where she is coming from, without body language and proximity.

I think that when you talk to her you should tell her to enjoy her holiday and you can speak about it all when she gets back.

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It's like in the Seinfeld episode where...