Update 6: She's gotten all the Metacam doses now, but seems slightly worse at walking today. She didn't get her full Chinese Skullcap capsule yesterday though. She also wriggled out of my hands and fell on the floor, I hope that didn't hurt her too much.
I don't think the Metacam made much of a difference, not much reason to check with the other vet for more now. I'm going to continue giving her Skullcap as if it was Marek's, I ran into some issues with the toll so will see if the tincture gets through.
It's been over 2 weeks since she started limping. The vet said the nerve felt swollen so it's probably not a sprain or fracture, but I feel like she should have gotten worse if it's Marek's? I'll keep treating her like it is since the Metacam didn't help, but it all feels strange compared to the earlier Marek's cases I've had. I'm not taking her back to the vet to put her down or a necropsy as she is now, I'll keep giving her capsules until it gets much worse. It hurts to see her limp, but she's still alert and enjoys eating snacks, loafing with her flockmate and being held like before