This has been a long-term problem, but it has gotten much worse recently. Former neighbors of ours got JC's "doppelgänger" 4.5 years ago, and everybody kept picking her up and delivering her to our door, thinking JC had gotten out. The people moved away 3 years ago (about 12 miles away), and their cat would return to her old haunts every few months (and the rest of the neighbors would bring her to us), so I would call her owners to come pick her up. The past few months she has been showing up several times a week. Her owners are so afraid that she'll get hit by a car that they've talked to their former landlords, who've agreed to adopt her. So far, so good - she's being well cared for, and is back in her old neighborhood. But: she apparently has decided she'd rather live in our house, even though we purposely don't feed or pet her. She now sits outside the house and wails for hours. JC won't accept her, and he sits inside and wails. We've tried "introducing" them according to the "rule book", but he attacks her. This morning she brought us a dead marten (kind of like a weasel - don't ask me how she managed to kill it), and now, 15.5 hours later, is still sitting on our front steps begging to come in. I'm afraid to chase her away - what if she gets hit or shot? We could let her move into our furnace/laundry room (bright and heated), but that doesn't seem ideal. Any ideas?