Hair disaster!! Black box dye

[wanttokickoffbutcant]

I thought I had already posted about this but seems not....

My DD15 managed to dye her lovely natural blonde hair completely black with box dye. She meant to do a dip dye (??) so kind of the under bits of the ends dark and it went wrong. Any ideas to get the stuff out would be welcome before I have to get a second mortgage at a salon.......

I would see if she can style it to suit her maybe have it cut a little shorter and wait until it grows out - not ideal but at least it’s not forever (if she don’t grow to like it)