Thank you for the advice Cypher and for letting me know about the wooden items.
I phoned P@H and she'd been taken out the back, bless her. They suspected she had Wet Tail
Her rear was clean and dry when I saw her but as I said, her ears were down and her nose was bloody.
It's made me think twice now about going there now because I'm wary of how well they will disinfect the tanks and the few bits they put in with them but there aren't really any other options here.
I don't know how healthy a ham would be if it was lucky enough to survive Wet Tail.