Bride-to-be Cassie Warren admits she wasn't paying much attention when she sent out her wedding invitations. It wasn't until one of the invites came back with a personalized note and $20 enclosed that she realized her mistake. The couple still doesn't know who it was from, but Cassie did send a thank you note. They used the money to take a friend who was about to be deployed to dinner. InsideEdition.com's Keleigh Nealon has more.