very dissappointed with dd hair; can any bleached blondes advise please?

[Gatekeeper]

dd has mostly mid brown hair with light brown/dark blonde bits in it but was blonde as a child. She has wanted to be a pale blonde for some time so asked my usual mobile hairdresser to do it explaining what she wanted; dd has been saving her money for this for a while
She said it would probably need to be done over two sessions which I was fine with. DD has collarbone length fine textured hair

First session was urgh...with blonde roots and orangey, brassy tones elsewhere. Roots have come in since the last session (about 5mm) and she did her hair again. It does not look very good ...the roots are very brassy, some hair is blonde and there are still very brassy tones.

looks a bloody mess - cost far too much which I'm bloody cross about- and dd is crying her eyes out. She is adamant that she doesn't want to see this particular hairdresser again but I don't now if there is anything we could do at home

Of course her hair went orange, 20% peroxide was not adequate and I'm betting it was washed off too quickly.

The problem is if you bleach it at home you risk damaging it. The hairdresser needs to correct it free of charge.

Ring the manager tomorrow?

Also a toner won't do anything for that apart from make the ends more purple. The roots are too dark to lift the orange out with silver shampoo.

Bloody hell, that is rubbish and £100!! at home, Jesus.

My mobile hairdresser cuts, styles and does a full head of highlights for £35!! Can't believe you have paid so much OP. Hope it gets sorted.