I just found it very odd to hear a WG specifically tell a client to go Bb and cum inside her. Very unusual unless, you've toyed around with it previously, which then suggests why the OP would want to mention it at this particular time?
Or she was always offering it and perhaps there was a breakdown in the expectations based on previous meets.
Or she is, as the OP went to say later, drug dependent so was trying to maximise her income at this particular point.