Your horse is in trouble at this place. And you need to move her. She is not getting enough to eat, and will also add it should not have taken 8 months to have put weight on her when you first got her either.
But this horse is in sad shape, and you can tell that looking at her eyes too.
She is getting treated badly here at this place. She is not getting enough to eat by a long shot, and probably spends most of her time being chased away from the hay.
Move her, or pay for her own stall and pen and go out and feed her yourself 2x a day.