Dirty talk can be tricky, sometime. I have used it myself sometimes. The trick is to start out slowly with it. Just a little tease about being bad or naughty then letting it build up. You can't go from zero to 180 mph with the dirty talk. It sounds forced and like bad acting. The key (especially with regular women outside of this hobby) is you have to bring it back down and re-engage with the gal afterwards, kind of laugh it off as playful fun.
As far as nationality I believe she is a Vietnamese/European mix, that works very well. A total stunner. As far as I can tell she plays very safe and protect you and herself. A total professional.