social doggies

so saturday i had to go to the humane society to pick up fred. he thought it would be a good idea to go visiting down to big johns (2 businesses down and across a busy street). the customers that found him took him to the humane society which waved the fees for me since my dogs are registered and i have not had to do this before. so, fred the wanderer dog is in his kennel at home and ahna has been here by herself. so today, a good friend of ours pulls up yelling at ahna. i go out front and he had found her sitting in the middle of the street out front. so, now ahna is here, but on her chain and crying because she is tied up. now i am worried that i won't be able to trust them to stay here since they have gone out visiting. any ideas???????????