Gracie, our little dog, was confused and kept looking for Bill. Then it was obvious she was entering a sort of doggy depression. This is when Minerva moved in.
She is one weird cat and so unlike Muppet that I can relax and let her be. Even when she does things like ambushing Gracie and jumping up on the kitchen counter, or like this:
01/04/10 Update: Minerva finished the job in the wee hours of this morning. Sigh.