Your price is very reasonable. In the big city, we pay much more. Don't blame you for being a bit on the snippy side. If she has a sister who is willing to do for less, than she should have gone there in the first place. Something tells me her sister was too busy, or didn't want to do it. I try to spin what
I say to people so as to soften things, but she opened the door by mentioning her sister.