The intended meaning *could* be that she is being moved as part of the Carpathian Lynx conservation project; if the introductions have not gone well, or if the presence of a strange and different lynx has been distressing the new arrivals, they may think it important for the breeding prospects of the Carpathians that the distraction Chloe caused be eliminated.
This is, of course, all conjecture.
Quite possibly but rather than move an old lady she could have been found a place somewhere else in the zoo. I will miss seeing her too.