I got a phone call from the vet this afternoon. I'd already done some checking online to see what the options for treating hyperthyroidism were and so wasn't surprised to hear the same thing from her.
Because Belle isn't a senior cat and is in otherwise good health the vet was quick to recommend the radioactive iodine treatment. While initially expensive (about $1000), the cost of a lifetime of pills (probably 2X/day) and regular bloodtests could eventually match the iodine treatment. Plus, pills would never cure it, just treat it. The iodine route will essentually cure the problem.
This is good for a myriad of reasons, the biggest being when I travel in the summer. I can have friends come in and feed the kitties, but many times they don't see either cat as they're really not stranger-friendly. So having to extract Belle from her various hiding places could be traumatic for her and whoever was conscripted to push a pill down her throat. And I just don't see trying to take her along in the car/trailer. She's never been and I don't want to stress her out now. Plus, if I took her I'd have to take Smudge, and life would just get ugly trying to get him to cooperate. He's a big boy with a definite mind of his own and isn't hesitant to let you know what he thinks of a situation he disapproves of.
So, it's a good thing I'm getting a chunk of $$ from my income taxes. I don't have to do anything immediately, so I'll probably wait until my Spring Break to get her in. She'll have to go to a specialized vet that's about 60 mi. from here and might have to stay as long as a week, depending on how long it takes for the radioactive material to make its way through her body.
In the meantime I'm going to relax -- and be very thankful that she's healthy, relatively young, and it's not a dire emergency.
Thanks again for your support everyone!
Laura -- and Belle