Just out of curiosity, How many years have you been working with herps?
IIRC, oil based reactions normally show up after prolonged exposure. And at the same time, some animals reaction are violent and others seem "immune" to the effects. That being said, what it is the harm in swapping it up with some newspapers whilst waiting on your vet appointment? Now omitting that fact I would be more inclined to lean towards either IBD or RI as well... And I really hate saying that because both are generic "go-to" reasons and thoughts no matter how serious or minor the "symptoms" are being expressed.. Dolly's symptoms sound rather serious which is why I even took the time to mention it. Please update after the vet apt.