"The return address written on there correctly," Annie added, actually turning to walk backwards so she could keep smiling at him -- and, while she was at it, going ahead and peeling her shirt off.

Just seemed like a good idea?

"This might even be a letter that needs two stamps, Diego." Annie never mailed anything besides Christmas and birthday cards and, recently, a batch of wedding invitations. Was it a thing to use two stamps? Whatever, go with her on this.