I cant believe she took off your hair....see I would have been so mad. I had my hair really long when I was a teen and my parents when to get me a trim and i said I didnt want it short, the lady cut it so short it was like a boy. It was awful. I hated it and Im so scared it will happen to me again. People have always took off way too much when I asked them not to.
but yes I would wash my hair to get the bad products out and do a deep treatment and style your hair the next day like your way.