Thanks so much for the helpful replies, folks!
Our dog seemed to be doing better after a 24 hr. fast, followed by a week-long bone broth detox. (Poor dog, the kiddos gave her lots of TLC, but she seemed a bit confused.) We let her have ample amounts of broth, cause that's all she was eating, giving it to her four or five times throughout the day.
We gradually introduced healthy homemade dog food, mixing it w/ bone broth, using Carla's recipe as a guideline. (Thanks, btw!
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We could immediately tell her poop didn't smell like a sick baby's diaper anymore, and she didn't seem quite so ravenous. (Although she will still dig up beetle grubs any chance she gets, ugh!)
We've done a few more 3 day broth diets since then, about one per month. The holidays were a busy time for us, and we like to be especially attentive to her while she's on a broth diet, so she only got one between Thanksgiving and New Year's Day.
She could still stand to lose a few pounds, but hopefully with warmer weather, she'll get more exercise again. In the meantime, we're following these suggestions and frankly, getting better results than we did taking her to the vet.