Sounds like she rushed you to finish, and then ran off to waste time in the hopes you would quickly leave. In the end, you paid £160 for 12 minutes. She's another one that I fucked elsewhere for £60 for 30 minutes... although I paid less, she was still total shit.
I'm guessing she went full-indie, inflated her prices, but still cheats punters.
Did you suck her tits? She wouldn't let me suck her tits, which totally defeats the purpose of seeing an SP with big tits. Pointless.