I found this:
give 400IU Vitamin E and 1/4 tablet B-Complex daily. A little treat of egg has sufficient selenium, so give her egg daily. You can find E and B-Complex at stores like Walmart, CVS, etc. in the vitamin aisle.
Hope that's helpful.
Sorry for your loss. It's possible they all ran around in a panic due to the noise of the hail hitting the roof. I'm not helpful in the healing area but hopefully soon someone with experience will see your post.
Keeping them warm, dry and in a quiet place is all I can think of.