Souraya, you said exactly what I wanted to say. Quickly contact the lab rescue groups and let them know exactly where she is. They'll go get her if they are truly into rescuing Labs. Many of the breed related rescue groups check the pounds and animal control facilities weekly, just to see if there is "anyone" there to get out.

Good luck. I hope you can help by notifying one or all of these groups. You will have done a great deed!!