With her having a low temp..digestion will be slow. Corn is very hard for them to digest. Its recommended not to give any feed at all when sick. Goats also have a very fast metabolism so daily B complex would still be needed. I would have never worked her with a low temp unless it was very much needed..again comprises her rumen. I would definitely give probiotics 3-4 hours after the wormer to help restore flora in her gut. Dark beer at room temp wpuld do her a world of good as well if you are able. I know lots of conflict with what your vet said and I dont want you to be uncomfortable going against your vet..this group is a wealth of experience...but in the end you need to do what you feel is best for her. With that said..i do think she needs b complex once daily. She needs probiotics and dark beer to kick up her rumen. No feed, especially corn while down. I would keep hay alfalfa and browse foods close. Electrolytes to encourage hydration. Sending positive thoughts!!