I think your paranoid now mate. You have uncovered her messages on these sites. Dont forget you are 7000 miles apart. The question is can you trust her?. Its hard being that far apart believe me I know. The problem you have got now is that you will go over there and meet her and probably spend your vacation just with her. Then you will come back here and after a few weeks you will be loggging into her accounts again to see what you can find.