I really liked the suggestion of getting in contact with all your customers via mail with some sweet little note about your services....
I wouldnt sweat it because she can't beat your winning personality....also I would much prefer somebody with a lot of experience than a newbie even if it cost a bit more....It is really delicate work and feet are so sensitive.
I would be upset too though but I think that is just normal....
the way you described her, she sounds far from gentle and I would really be ticked off big time. I think she had a lot of nerve. Just from her manner I would never want her to touch my feet.
Bobby