I don't mean to come off insensitive, but $1500 on a cat? When I read the thread title I though I was just plain tired, but you're stressing over a cat having kitttens? People stress over debt, bad relationships, unruly kids, bad neighborhoods, and you're stressing over a cat having kittens? Its an animal for crying out loud. The back yard, a shovel is cheaper than $1500.
what does it matter to you what she spends on her pet? What does it matter to you if she stresses over something she loves possibly being hurt?
Here's an idea, why don't you take your shovel and your crying out loud, go out to your back yard and play with yourself?
Edited to add a "high five" to Baba.