Yes, sour crop. I've never found oil to be an effective treatment for it. My normal treatment regime, which has been very successful up to this point including on her one time before, is 2-3 days on an epsom salt laxative twice daily to get things moving, ~1 week on an antifungal for the souring, and then weaning back onto normal food and we're good to go. The only difference between now and previous times is that I had nystatin as my antifungal before and this time I have miconazole, so I have to wonder if it's just not working as effectively. I've ordered some nystatin now but it's projected to be here in 7-10 days, so who knows if that's even going to be soon enough. All I can do is keep fighting and hope she hangs in there until something starts working.