There have been sightings of this girl looking healthy, happy and generally "hanging around" with another female black cat. The general consensus is she's been taken in by somebody I think. A couple of attempts to catch her resulted in a policewoman and the young boy helping looking very sheepish because they couldn't manage it.....
Not an ideal situation, but if she looks as well cared for as I'm told, then hopefully whoever's caring for her will have got her spayed too.