First post and a negative? This one may be a bit fishy. I used to see Claire for car meets a year or so ago and she didn't strike me as the robbing type.
However as mr fishy foo says - never pay a deposit. Ever!
She has done me as well, I was staying in a leeds hotel a couple of months ago, and wanted an outcall, first she said transfer £40, then this went up to £70, then she went silent. Gave her the benefit of the doubt and a few weeks later when I was in Leeds she said she would come to my hotel, and went silent again. I won't ever see her again, AVOID
If she had a good reason she could always transfer the money back. Inquiring for an outcall with her is an opportunity to rip punters off