Yes I think she gives the clue away when she says its something she chooses to do not have to do. Indicates that she intends to pick and choose her clients, which to a certain extent I understand but its just more honest if she just comes out and says "you need to look fairly hot before I will see you, if not dont waste your time trying to see me".
If we were in her position would you pick the 26 stone bloke, who decided to head bang the ugly tree for £140 an hour? I mean the money is good but not that good. But her expectations seem high and also its dishonest of her to waste my time and everyone else she turns down.