Where oh where has my little dog gone

I told some of you that I had talked Marissa into letting me get Ryleigh a new puppy. There was one brought down to the PD and I just fell in love with it. I built her a fence in the back yard and brought her home! Ryleigh fell in love instantly! I put the dog in her pin and went back to work. When I got home at 4 the pup was still there, but when Marissa left for work at 7:30 she had disappeared. We looked everywhere for her. I even had Marissa put an ad in the paper. Ryleigh keeps saying, "Puppy where'd she go?" When I tell her that the puppy ran away she gets a sad face and says, "why?" We miss our puppy and hope she comes home!!! :(