back to the 2 cup questions
how do i go about asking? straight forward? ie... "can we go second round?"  or more subtle..."do you sever 2nd cup?"  which one is better i dont want to offend the provider

Either one will work.  If you have a two hour session the second cup is pretty much a given if you can do it.  If you see the same lady a couple times then it gets easier.  Most quality ladies will jsut offer you the second cup and take matters in to their own hands so to speak to get it going.

As long as you can keep it up and you have time in your session ... many will offer you as many cups as possible.. it's your session .. just tell her or ask before hand.

(quote)do you sever 2nd cup?"  (/quote)
I think you mean serve a second cup.  I do not think I would want it severed....

Please do your homework before asking/ seeing a provider, If you're a VIP member on TER you will see what she offers and what she doesn't do on her profile.