Well, I did it. I brought the little manx into the house. Yes, I know I'm crazy, but I just could not stand looking at her outside in the cold. In any case, I took her to my vet and the good news is that she is not pregnant and had negative combo-test. She was treated for ear-mites and intestinal worms. At the moment I have her set up in a spare bedroom. I will be out of town for a few days and didn't want to let the BMTs loose on her if I'm not here. It doesn't mean I'm keeping her! She is still on the waiting list at the no-kill shelter. We will see how she adapts here, but ideally I want to find her a home. At least she is cozy and warm inside, although a bit lonely in a room by herself, but that's the best I can do for now.