I think that it's entirely reasonable to expect that any pre-scene discussions about what the scene should entail, as well as scene negotiations (i.e., safe words, discussion of medical issues, limits, etc.) should be considered part of the provider's time and, thus, compensated as well.  I can definitely see the benefit of handling that separately beforehand, and going straight into your fantasy when you meet in person.

Good for you !!

I was certainly happy to help

As LeChiffre says, talking about the what, who, why and where before a scene, particularly an immersive role-play scene, is soooo important. That is a big reason why I prefer email over telephone...I find a lot of guys are rather shy about talking on the phone, but can put their fantasies into written word very easily.

Good luck to you, sounds like you have found a keeper !!