MH found out who the little black kit/cat lives.
Its the people upstairs from us. They let her out at night and let her back in sometime in the morning after I get home. I offered to take care of her instead of them letting her out (Since we live next to a major highway) but they wouldn't take us up on the offer. They do take care of her at least, she's small but well fed and her coats shiny. So I made up our patio with a place to sleep and food and water so she has a place to stay til they let her back in. (I hope she's been spayed or it could get bad).