Oh Kim, I wish I could be there to give you a hug. It sounds like you really need one right now. I'm so sorry this is all happening, but I'm sure you're doing everything right for these kitties. I'm glad your vet was so supportive. Somehow you must have known that, and known that you needed his assurance that you were doing everything you could for your kitties, and that's why you ended up there.

It sounds like you're exhausted from the constant worry and stress of caring for all the sick kitties. I know this is easier said than done, but try to get some good sleep. Being tired and stressed out won't help the kitties any, so you need to take care of yourself too - so you can help them. A good night's sleep always make the world look a little brighter to me, so hopefully it will do the same for you.

Once this is all over, and all the kitties are well, I hope you maybe just take a step back, but don't get out completely. You've done so much good for all these kitties that I really hope these setbacks don't scare you away for good.
{{{Hugs}}} to you. Sure wish I could help somehow.....