Do you think you could find someone to foster the dog until you can get it to your friend? Do you think she wants the dog back enough to put the money out for him?

Your friend could be working, out running errans ot just tied up and unable to answer her phone.. Can't the shelter give you more time to get in touch with her... I think it odd that they only gave you a few hours when there is a possiability a pet could be reunited with it's owners.