Her weights fine. She's actually grown a bit more than some of the other girls she came with. I didn't notice anything wrong with her yesterday, but I didn't do much more than count them. So it could be a progressive thing. I didn't see any unusual poop out there, and she hasn't pooped since I found her and brought her in.
I did have a hen suddenly die this May (White Rock about a year), but I was out of town and have no idea what it might have been. I assumed it was either the heat or eggbound. Perhaps it could be related . . .
Now that I've read up a bit on Marek's, I remember seeing one of my landlord's chickens go through it, and these seems real similar. I don't think she's capable of eating or drinking on her own. My chanteclers have always been pretty wild, because I didn't handle them much as chicks. But she's laying on a towel next to me on the bed, barely noticing I'm here. I think I just need to decide whether or not to give her another day or two before the inevitable.