If she’s not spayed, there is a very high chance that she will find a way outdoors, and pregnancy is very draining on their bodies. They generally have quite a few kittens because so many of them don’t survive. My most recent foster momma came to me practically skin & bones, and we lost 2 out of 5 kittens. Kittens are super fragile, and you can do everything right, but still lose them. And if they do survive, the shelters are already overflowing with homeless cats, so many get euthanized purely due to lack of space.
I was living in a house with a few random housemates… people that I didn’t even meet until I had moved in. They were okay… nothing amazing, nothing too terrible. Somehow, the person I was on the date with realized that they used to know one of my housemates, and absolutely hated them, and wouldn’t stop talking about all of the reasons why my housemate was a terrible person.