DD has lovely, 17 inch hair, naturally dark blonde hair, dyed brown. She wants to ombré it for her birthday, which would be free at her aunt's hair salon. However I am worried about whether it goes wrong. She wants around 4 inches dyed blond, but she is worried about whether it will all be in a straight line. Unsure as to whether to let her or not, need other opinions before I decide. Her school should allow it, other girls have it.