You said she ate some scratch. Are you feeding anything else? It also sounds like she could possibly be calcium deficient and if laying and pulling calcium out of her bones, that could potentially cause temporary paralysis.
Okay. I'd have said why do you have an unmated cock in with the breeding pairs, but it seems like you answered that. So let's look at your options since he's one you like. Yes, get him a mate no it doesn't have to be homer. There's probably a local feed store that sells pigeons. Just find a...