Someone has text me from a recommendation of a client because she has scalp bleached her own hair during lockdown (she normally has high lights) and now she has canary yellow roots. It looks like she's been overdoing the blue shampoo and has pure white/grey ashy ends. What can i advise her to do in the meantime. I use Wella but don't have much at home, would a 10.16 with maybe a touch of /88 + pastel work? I don't want to get this wrong because she could potentially be a new client, Im worried if i give her a toner to use her ends will go blue! Please help