The important thing to do is clear out that crop so nutrition can get through. I'd hold off on vitamins till you are reasonably sure food is being processed, though you can use the liquid baby vitamins without iron and drop them right into her beak. I've cleared up sour crop on a couple, lost a couple to it, lost a couple to complete crop stasis where it just quit entirely and refused to start back up, even after surgically cleaning out the crop. I sure wish you luck with it-will be pulling for her!
