Wishing you the best. I hope she makes her way home to you. Was she wearing an ID tag, or is she microchipped? If she's chipped, be sure to call the company and notify them that she's lost! Flyers are always a good thing. Hit all the local vets and shelters too! I bet someone scooped her up and is keeping her safe and warm. Oh, and post a lost ad on Craigslist too! ALOT of people get on Craigslist.
I hope to see that you've got her back next time I log on!