It’s supposed to read

“How awful, she didn’t deserve this”

The natural interpretation being that the zookeeper did not deserve to be mauled to death. Then you continue reading…

“Imagine the life long trauma of knowing you killed someone!”

Ah, what a twist, they were referring to the leopard, not the human. I don’t find it a terribly great or funny joke but there it is.

I think it’s supposed to be a switcharoo joke