OP, how much were you supposed to pay her for the original session if 250 wasn’t enough? And why did you think going home to get your wallet was going to change anything, she couldn’t get a room at 2 places with your 250, what good would giving her more money correct that problem? Or did you need your ID to get a room?
Either way, you totally deserved to be ripped off. Chumps of all forms bring down the Hobby.