I'm just finishing up with Miss Lily at the vet, and I'm happy to report that we have a plan of action! As per my vet, I'm going to up my multivitamin to every other day (Repashy Supervite, contains preformed vitamin A) for the next month before cutting down to my regular dusting schedule. She agrees that Lily's mouth lesions don't appear to be mouth rot, and may be due to rubbing. We opted not to flush her eyes this visit. Lily weighs in at 48 grams, which is consistent with my at home weight, and there are no other concerns. We're both happy with her current hydration levels.
I'm bringing home Eye Stream (ophthalmic irrigating solution) and 3-Biotic +H (NeoPolyBac HC) for her eyes, and Flamazine (silver sulfadiazine cream) and Betadine (1% iodine) for her mouth lesions. I'll touch base with her again next week for a brief consult (without Lily) to see if the medications need to continue another week, and again at the 2 and 3 week marks. Assuming all goes well, we'll have an official recheck in a month's time!