The minute she knows you even know about UKP she will be trying to twist it to her advantage and then —- poof —- goes any UKP anonymity. Maybe you were gonna give her a good review anyway.
But what about her mate? ...
yep... in my own experience “her mate” usually turns out to be right fucking bitch.

There are ex-pats in Thailand who think they are on equal terms with Thai people. Until the day cones when there’s a dispute. Then they discover to their horror, even among their so-called ‘friends’ that Thais always stick together.
The same with prossies only more so. And they will feel right fucking righteous about it. The key is to make the most of the formal relationship. Both parties protect themselves by remaining completely anonymous, playing a part. If you do that, you can “be nice”, “relax” and even tell her what a pretty bum she has (as it wobbles under the low lighting).
Some punters have a ‘back story’ if she gets probing. A very common name, a shit ordinary job, respectable but not posh clothes, and no details or stories that are used anywhere else, even on here.
Personally I just steer the conversation away from me. If she wants to talk, let her talk about herself or what I like when I’m paying for her services. That’s enough to fill the odd moments of polite chat.