My part in the plan was to come up with a reason to keep the birthday girl at my house for about an hour so the guests could arrive at her house and decorate. I came up with a semi-lame story about a Valentine's event that I needed to bake cookies for. Would it be possible for the birthday girl to come over to help bake and decorate cookies?
The Girl as Photo-Bomber
Many cookies were baked and decorated. Then it was time for the birthday girl to go home. My girl walked her home, just to be nice of course.
And she was very, very surprised.