Update! I've been leaving her alone with her full udder and she's been fine, but today I either had to go to the store to get some milk for my tea OR try to milk her again. So, I tried hand milking her, and OOH LA LA, she let me! She was quite calm about it, compared to 1 week ago!! I suspect the Baycox for Coccidia and the dark beer for tummy ailments has helped her, and her attitude is more normal. Yay! Thanks to y'all.