I use purple shampoo on my hair and my hair dresser said if you leave it on more than a couple minutes it will stain your hair, so I can't believe someone said leave it a couple of DAYS! Oh my... I read somewhere if that happens use dish soap and leave it on for a few minutes and then condition! In the future if you use it... try mixing it in with her normal shampoo and leave it on a couple of minutes instead of by itself. Good luck!
There is something about the outside of a horse that is good for the inside of a man ~ Winston Churchill