My natural dark blond hair turned red after coloring

by gosia
(Boulder,CO,USA)

Hi, I have seen similar posts, but my difference is that I do have highlights; here it is:
My natural color is dirty/dark blond with very very slight goldish tone. I used to do highlights for years and my hair, always nice light blond (not yellow). Recently I decided to go back to my natural color and make just a few thin highlights (brushed on in the front, and down parts, so overall I wanted all dark (as my natural color is) with a touch of sun. Well I went to hairdresser and she did the color what came out a lot darker than my natural color (she put dark ash blond) and left few of my "old" blond highlights.

And after just one wash my hair tured brassy orange/red especially in the roots!!! It shows a lot in the Sun!
I went back to my hairdresser and she said there is nothing we can do since I must have red in my hair, that is why it is turning red. Well i dont believe her at all, my hair never turned red, it was always nice and ashy.

How can I fix it myslef?? I also want to leave my blond highlights where they are.
thank you so much for help!