Mine didn't make a noise when I picked her up either and I couldn't feel any abnormality. This happened on Christmas Eve so I couldn't get her to a vet until after the holidays. The vet basically checked for a pain response (which was a leg quiver when upright) and packed me off home with some Metacam and not very much hope. She's still with me and standing now. She's eating, drinking and enjoying the luxury of my spare bedroom! Little diva! I thought it was Marek Disease when I first found her!
Is she sitting straight? Able to stand or leaning to one side?......... Joanne.