Sounds like Becky's off line now - if not or if you contact her, maybe try a warm bran mash, some molasses in it if she has it around.
She'll probably come on line tonight one of the times she's up checking on him.
I don't usually have bran on hand, but I do like to make hot grain mashes in winter when it is bitter cold out. They love it. I boil water and pour it on regular sweet feed or Bay's senior pellet and let it sit a minute. Might also be something Rusty would like using his pellets.