Welcome to the Buzz!

I agree with what the others have posted. Definitely notify her by Email about what you are looking for. If role play has been an integral element of your fantasy then it makes no sense to ditch it now. Having said that there is the phenomenon of subs that have lengthy detailed scripts that they expect the Dommes to carry out to the letter. Those guys are not looked on favorably. So don't go overboard with the detail. Give the lady some room to improvise.

There is an old thread about role play that Mistress Ayn started I think you will find interesting:

http://domina.ms/~domroot/thebuzz/ubbthreads.php?ubb=showflat&Number=1995#Post1995