Ok looking at the pic on the left, was that after the 44/07? Should not have been that red and wishy washy (sorry) so make sure when you darken you use depositing peroxide only, Demi/quasi colours are best, hold better, give more even result, and last longer than permanent colours (when darkening down) also kinder to the hair
The pic she now wants is a mix of caramel blondes and a neutral mid to light brown over the rest, from what she wanted to that you need to tell her this wont happen in one go!
This time concentrate on neutralising the red, luckily she's around a level 5 so going off the left pic I'd either try piercednige's solution or do another base with green in the mix to neutralise the red, as it is wishy washy just now. Then tell her next time once faded a little you can work on introducing the caramel tones but as she showed you natural dark brown you had to put in red to make sure she didn't go green, but unfortunately as red is a strong colour it shone through more than expected, so will neutralise that today and work on the caramel tones next time.
I have a lady that changed her mind 5 times during a consultation, so I told her I can't test or give advise without know what it is she wants! Lol.