Is she passing any droppings? What do they look like? Can you get your eye on her vent.. is it like pulsating/pumping/ or swollen looking?I will keep an eye on her but put her back with the flock. I’m sure she’ll be happier there. Thanks for the info and i will report updates when they are available.
I haven’t checked to see if she’s egg bound. You mentioned that in the first response. Should I still investigate that avenue?
Egg binding is *usually* deadly within 48 hours due to the blockage caused.. Bit since you describe her as raising her bumm.. I would definitely still look into it.. An egg somewhere inside could be pressing the leg nerve or something.. an if it isn't blocking the vent. Usually egg bound hens are staying in the lay box.. and not lame like this. BUT some things can cause a multitude of issues to present in combination and therefor I wouldn't want to take any chances.. noting she may also just be on a break laying wise.. I've had several gals lay gang busters to start and take a short rest before returning to lay.
It doesn't sound like you have nutritional factors that would actually cause this sort of limping according to your description. BUT the supplements suggested MAY be very helpful and worth adding still.
Have you had the chance to feel for the heat or swelling that might indicate pain?
WAIT THE UPDATE LOOKS PROMISING!

Or at least rules out binding for now!