We came home on Sunday evening to discover that Louby seemed to have hurt her leg.
An (expensive) trip to the vet and an X-ray showed that she had dislocated it.
The vet manipulated it back into place, so now she is on a course of treatment, and has been ordered to rest for a couple of weeks. She is still hobbling about on three legs.
So no more jumping up trees for Louby !!!