Any cat psychologists here?

I have no idea what to make of this interaction:

Sherlock starts singing the song of Sherlock Triumphant: "Rrrrrrrrow wow! Row wow! Rrrrrow wow!" It means that she is in possession of one of the plastic spring toys that are the reason for Watson's existence. And indeed, Sherlock is crouched over one. I laugh and the following conversation starts:

"Sing the song of Sherlock Triumphant!"

"Row wow!"

"Sing!"

"Row!"

"Sing for me!"

"Wow!"

"Sing, my Sherly of music!"

"Row!"

... okay, you get the picture, I quote Phantom of the Opera at the cat until she stops meowing and gives me a "You need therapy" stare.

Then I ask her if she wants to play, and bounce the spring. She stares at it. Watson goes into high alert.

I throw it. Watson zooms after it and bats it.

I go to it and say "Hey, Sherlock had that!" Sherlock walks away and flops over. I toss the spring back to her.

Sherlock stares at it resting against her foreleg, then ever so slowly, glacially slowly, she pokes it with a hind paw.

Then she promptly ignores that it exists.


Gytha's games of "Hide and Squeak" pretty much are beyond me. This? This is utterly alien.