I don't negotiate donation amounts just because I feel that it may compromise the atmosphere. But to satiate people's curiosity, I gave what was asked, nothing about it was discussed, and we had a good time.
Unfortunately, her body did not meet my expectations, although it may end up exceeding others'. She actually seems to believe that her frame is a lot more attractive than others who are requesting a lot more for their time, but that's just not my opinion.
My minimum standard for slender/athletic would be Candy, peviously featured at DONY (GOD, I miss her). And for the same donation rate given to Kate, I had the pleasure of experiencing Jessie Luu's (near?) perfect body.
So I have my biases.