I have a similar story my sister in law found a beagle behind her house . The shelter in her county is a kill shelter so she asked my wife would take her to the no kill shelter in my county. She got as far as bringing the dog in and signing the papers but the guilty feelings started on the way back home . 22 hours we are on the way back to get the dog back . They also put us through the ringer and charged 100.00 for the adoption fee. Its all good my lab has a new sister to play with and she has been a pretty good dog so far.