Dennis wanted a special proposal for Trinity. He knew family was important to her, so he got the word out that he wanted to do a proposal involving everyone. He put together a caroling project, they practiced the night before, and then they followed through with his plan.
Trinity was stunned. She had no idea what was going on and thought her mom had maybe put together a choreographed caroling special for them or something, but as the carolers parted and her two cousins finally moved aside, there was Dennis.
She first goes to hug him, until she realizes that he’s staying there on one knee. She was, as the video shows, truly shocked. What a wonderful Christmas surprise!