I am happy you update, but I am sorry to say that you aren't doing enough. In such long time she should already look round. Either her teeth are off and she cannot chew well, or her stomach is all kinds of messed up (ulcers, need probiotics etc), or you simply aren't giving her enough feed on top of that pasture.
She still needs buckets of FOOD, high quality food, put into her.
Her teeth were floated about 6 months ago, she still gets omaleen400 3times a day plus 10 acres of pasture with just her and camilla and two other horses the place im now boarding at offers full care they feed twice a day I feed the once she gets a 3quart scoop each time there are also roundbales in the pasture not much more can be done vet says her stomach is fine just that she was that far down and it will take a while , after twitch had to be put to sleep we did a full internal exam (what my vet called it) with ultrasounds and all she spent 2 weeks in vet office makeing sure she was good and all came back clear even trsted for patasites again all clear im not doing anything with her to burn more energy or fat
I scoop a feeding is not very much, I had a TB gelding that required two scoops a feeding of senior feed just to maintain weight without being ridden. She still has a ways to go, but she should be farther along. She needs more feed, and a good senior feed would do her good. What feed is she on?