Thank you for your responses. I carefully considered everything that was mentioned, and came to the conclusion that I need to feel like I have done "due diligence" to the point where I would feel like I had done enough. We put up more signs, I have faithfully checked Craigslist and local classified ads, and everyday done SOMETHING to try and locate her former owners. And I think we have done exactly that. Between my husband and I, we have spent hours, both together and separate and come up with no leads. We haven't received a single phone call from the signs in our neighborhood.

So, I think the next step we are going to take is making a vet appointment for her and get her checked. I'm a little suspicious that she might be pregnant...but I could be way wrong on that. I dunno.

We have gone ahead and named her Maisy.

I also wanted to say that if we should find the owner, even after all of this, that she would go straight back to her owners.