Shave it off and let her natural hair come in.
I don't know much about colouring hair (at 34, I still have virgin hair and only starting to get greys now, I also have nice deep brown hair so never felt the need to dye it) but since she has such roots already, if she could find a good colourist (basically
anyone but one of Samantha Cusick's people) and they could put a nice mid-colour between her bleached ends and natural roots so it looks like a cool ombre, I think she could pull it off and then eventually go back to her natural colour ^^
Also, I think her hair has a nice wave to it so she definitely should try the curly girl method to look after her hair. Her mum and sister have nice curls and I believe that with a bit of conditioning, her hair could be curly and gorgeous
![Love :love: :love:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)