We had the same thing happen a couple of summers ago. After the vet checked for a microchip and found nothing I made flyers that said Found Cat in "my subdivision's name", call --- to identify. We got a couple of calls that weren't her description but by the end of the week her owners called. They were new to the neighborhood, had gone on vacation and the cat had wandered off. Whoever was suppose to be feeding her never bothered to call and I'm sure they would have seen the flyers because one was posted very close to their house.