I used to have a Nubian goat that had mastitis and lost her udder after the treatments were done. I had to milk her out three times a day to get rid of the poison and force fed her water and mashed oats. The vet progosis was guarded or poor and was doubtful if she would live by the next morning. Well with much coaxing, crying and pushing her to do the things I forced on her, she made it but was a long struggle. After she cleared up, her udder strunk up and dried up like a flat pancake that the vet made a complete removal on her one udder and the other udder was fine and doubled up on the milk. So she nearly puts out a good quart out on her udder and sometimes more.
The pictures of the swollen udder looks like so much like my goat.....nasty smelling to milk out but its for her own good. I never bred her again after that and we had a hard time drying her up and it was two years after she had her kid, she was still in milking production until I had to give her a good home due to college. I loved that goat and boy, what a teacher she was.
Good thing you got her the care she needed so things are looking up for you and the goat!