Whose Cat is it Anyway?

Backstory: back on Aug. 7, Reggie the Cat's father paid a visit, claiming him and explaining that his cancer-stricken wife was beside herself with worry over this missing cat who was her sole source of comfort and so on and so forth. Since then, a little urchin from that house (evidently a grandchild) has also come looking for Reggie. I've gotten into the habit of walking Reggie down to his house when I decide he's been up here too long and is probably missed by his "real" family (even though he's here about 80% of the time.) So:

I just got a visit from his mother, the cancer-stricken one, who had just observed me bringing Reggie home again. She drove up here ("I tried to catch you, but I can't run anymore, I can't even get down the driveway") to tell me not to do that anymore. It seems that they have three kittens that Reggie can't stand, and consequently he's something of a terror when he's trapped inside their house. She says she wants him to be happy, and anyway you can't keep a cat where he doesn't want to be (oh, really?) and Reggie's gotta be Reggie and if he's happier here, then that's fine with her. It was all a little confusing, as well as a little pathetic. I told her that I thought Reggie was a great cat and that he certainly loves being here, and her response was essentially "so be it; I have other cats anyway."

And I was actually going to the Humane Society this afternoon to get another cat. Now I'm not sure what to think, especially if Reggie/Trouble has issues getting along with other cats.