As for where she trapped them, people sometimes "dump" kittens/cats next to the local humane society. They don't even bring them inside, they just pull up, drop them off outside, and abandon them. And then there are people who want to leave cats at the shelter, carry them in laundry baskets or whatever they can find, and the cats escape. (A laundry basket is not a very clever way to carry a kitty.) Lately the economy has added to this problem. People are moving and abandoning cats like they're leaving behind furniture. And because many haven't been spayed (cats can get pregnant very young, at three and a half to four months), all these very young female cats are getting pregnant right next to the humane society. It's a very bad situation.
Denise is among the angels who is willing to go to the trouble of trapping these feral and abandoned cats and trying to rehome them. She volunteers as part of an organized program to trap, neuter, and either rehome them or at least place them in managed cat colonies that are fed and cared for. I don't trap... I leave that to other volunteers because I'm not patient enough and it just makes me so sad when I see the momma cats out there and their kittens sick, injured, or flea-infested. But it's something that hurts when I read that people don't spay/neuter. Everyone loves a cute kitten, but not everyone realizes just how many of them are euthanized or, worse, are starving, injured, or killed out on the streets.