The vets say I'm doing all the right things, just keep it up. Bella is happy and chipper in her padded Easyboots.
I don't know if I speculated too broadly before, but I want to clarify that I have NO reason to think she had a big worm load. I saw no evidence of it before or after I wormed her. I just thought that if she did, the toxins released could have made matters worse. I don't like the idea of a daily wormer in most circumstances. But I do worm regularly, and rotate the chemicals I use. I am considering looking for a different option for wormer for Bella now that this has happened. I remember that the Equine Cushings website had listed something about wormer being bad for horses with metabolic problems. I'll have to look that up again since I don't remember the details or the specific wormers mentioned.
I had started to panic thinking the wormer was going to kill her, but after talking to two vets I think it may have just been the thing to set off a laminitis attack that was already started and just wasn't visible yet. The only strange thing I can't explain are the lumps on her jaws. They got worse and some are open and oozing. The vet said Benadryl was a good idea.
Anywhoo... That's the up to the minute info. I'm heading out to see how she's doing.