weird behavior-feeding problem

I've had my adult anery corn for a few months now, and she's _never_ been a very good eater. At first, she'd eat only pinky rats, took one or two small mice, and that was it. Now she won't take anything-live or f/t. Left her in with a live small mouse, and she pooped all over it!

So I tried to assist-feed her a pinky rat last night. She kept puking it back up. Wouldn't make any attempt to swallow it. Ended up having to force-feed her (she hasn't eaten for a month-tried everything), which didn't work out so well either.

She kept the food in her throat ALL NIGHT and I finally had to pull the bloated rat pink out this morning so she wouldn't get sick. She didn't even try to swallow it whatsoever. I also noticed some chunky yellow stuff stuck to the rat, could have been from it bursting.

She's very lethargic, and her throat has not gone back to its shape. I know I didn't hurt her during the force feeding process, as I've had to force feed quite a number of herps before and never had a problem.

I've never seen this in any of my corns. I'm going to call the vet tomorrow, and hopefully they can help. She has no other symptoms, when I brought her in for sexing about 3 months ago, her fecal was A+ and I haven't introduced any other corns to her or made any major changes to her environmental conditions. All my other corns are perfectly healthy.

Any ideas?

chunky yellow stuff sounds like mouth rot. Not sure if ever a decaying rat would give you chunky yellow stuff.

-Lemur 6

Looks like mouthrot too, but she didn't have it before I tried to force-feed her. Could it start up overnight?

She's also my only sick snake, she's been separated from the others since she got here-I'm a bit irritated at the person I bought her from right now.