Spaying is a serious thing.
I feel it is one of those things that emphasizes the God-like control we have over our animals and that while it very often needs to be done, it should be done with thoughtfulness and respect for that.
There have been times that I regretted the necessity. My long gone, but never forgotten cat, Kismet, was one. She was the Gaia of cats. She had 2 litters, unplanned by me, and adored every second of being a mother. She loved her kittens, so much so that I never separated her from them and just kept them all (thankfully small litters). I still have 2, now 11 and 12 years old and another 12 yo cat that Kismet the Beautiful fostered. Until cancer took her, her babies were her babies, 7 years old and bigger then her though they were.
There will be none of those feeling with Katie.
If Katie and I could talk about such things, she would be incredulous and delighted that such an operation exists and demand to know why someone hadn't told her about it sooner.
Don't get me wrong, she loves her babies and takes excellent care of them. But they're just so .. so needy. And there are so many things to do now that the weather is so nice and she's lost that bowling-ball-on-legs kinda feeling. But no, the babies need her. They're sweet, she would say, and she loves them a lot, but can't we hire a sitter? Don't you understand these creatures get up every couple of hours All Night Long??
If she could understand, Katie would be thrilled.