Another idea is to give a higher price than you think it will take and hope she is fine with it. If she hesitates and you can tell she is shy of the price, don't be afraid to say, "Do you have a maximum budget you are working with?" Never hurts to ask, then you can get a feel for if this is going to work out or not. If she was thinking a couple hundred bucks then I would thank her for her time and wish her well. Get a price figured out, practice your "speech", dress nicely and be professional and you'll do fine.