How to help a sister who is upset about giving up a dog?

The SPCA is a great place for animals. They are also great people. When you go there tomorrow ask them if she could keep in touch with the puppy when the new family adopts him, if they are okay with it. She needs to understand that the puppy with find a new home with other children and be happy. Maybe until it is adopted she could visit with him at the shelter. It never hurts to ask. She could see that he is happy and well cared for. Maybe she could leave one of her old shirts or something with him. It will make her fell better that he can still smell her.