These guys are pointing you in the right direction. She's looking better. Don't go past 20" until the tiller is right, and as barebo said take it slow. Easy to get in hurry and shoot yourself in the foot.
As for tempering, that is always a good option with most whitewoods, but I wouldn't try to use it to correct the tiller. Get the tiller right, then you can bring the weight up with tempering. That said, if the area out of the fade was hinging at around the finished weight, tempering would likely bring it back since it will make the limbs stiffer.