Thank you for your advice. Last November, Nyx came down with the snuffles after a wellness checkup at our ex-vet. The vet never had any cultures done, but she prescribed tobramycin eye drops and oral injections of sulfameth/trimeth every twelve hours for two weeks. The snuffles were persistent, but by the end of the two weeks she was totally fine.
Then, out of the blue on Saturday morning (the 23rd), Nyx was having a really hard time breathing. She had white discharge from her eyes and nose, and a lot of it. She had been perfectly fine the night before, although a little more tired than usual. Thankfully I was able to get her into a vet we hadn’t seen before that day. The vet didn’t do a full exam (no temperature or swabs or anything), just prescribed an oral injection of enrofloxacin every twelve hours. Nyx stayed pretty stable all day, she even munched on some greens. I gave her the first dose of medicine that night before settling down, and she took it well. By midnight my gut was telling me that something was wrong, and she very suddenly started frantically putting her head down on her soft toys, to try to extend her neck. I was sitting with her at this point, trying to soothe her. She began to try to hop around, but her head was rolling up towards the ceiling, and she couldn’t move her legs. This only lasted an hour before she seized two or three times, and then it was over.
I hope that sheds some light on what might have killed her. I’ve gone through it a thousand times in my head, and I’ve done some googling, but I haven’t found anything. As a side note, do the descriptions of the vets above sound appropriate? I find it odd now that the second vet didn’t even take a temperature. We don’t have many choices for exotic vets in my area and I’d like to settle on one before welcoming another bunny into the household.