She's not going to her old home, shes always there for feeding time.
We had one cat a few years back that did that. We brought him back five times...said if he went again he could stay up there...and he did! (Don't know how he found his way back ....would have to cross Hyndburn Road amidst all that traffic. And how did he find the way... no scent to follow as he was brought to new house in a car.)
We've seen her wandering around in the area. Hopefully she will settle down. But as i said at least I know she won't go hungry. She ain't that daft.
Also I've made one of the out houses into a comfortable shelter for the cats, so she'll be OK.