Love it! If you've tried all that toning then I would try a quick, low vol bleach bath, but I'd definitely test strand it first. Not everyone can achieve a WHITE white, you have to have just the right melanin distribution/genetics to where your hair will safely lighten to such a delicate, diffused, super pale, very low saturation pale yellow. Even just a little bit too much melanin remaining will result in just a light cool blonde once it's neutralized. You need just a small amount of pale yellow to neutralize with a small amount of violet to give it the appearance of being completely colorless.