Please ask your neighbors about her, walk around your neighborhood and call her name, she must be scared and hiding somewhere. Place some of her bedding outside your door,maybe she will sniff her way back home. Check Craigslist in case they are trying to sell her. Check all surrounding shelters including the medical wards in case she is injured. Please be diligent about this, we have coyotes in our city. Good luck I hope you find her soon.