I'm vaguely aware of who this person is from another forum and she is a definite supporter of rescue and spaying/neutering animals and I have seen this cat up for rehoming several months ago now, she's not the sort of owner to abandon her pet, just trying different avenue to try and get it rehomed. There is clearly a genuine problem with her having taken this cat on and discovered that both it and her existing cats are extremely unhappy so the pragmatic thing to do after having tried everything, has to be to rehome. She is clearly at the 'last resort' stage, having been unable to rehome and having unhappy animals at home - but I suspect that she is simply using freecycle as another avenue to try and find a good home rather than as a place to 'get rid'. I personally am always suspicious of things like freecycle/freeads for animals as I think they may attract people looking for a pet they don't have to pay for, but there are plenty of 'genuine' people on there too, so as long as appropriate checks etc are done, then if the end result is a good home for a needy animal - so be it.