I watched that real time and I thought Laura was showing him the words to the hymn and he declined to look at it.. just my HO..
https://mobile.twitter.com/TWPundit/status/1070480786787319809
What I noticed is that he had his hand over his heart but they were singing “For All the Saints” (tune: Sine Nomine by Ralph Vaughn Williams). After she showed him whatever it was, he took his hand off his heart. Laura looked really hateful as she turned back. Of course, she could have just been thinking, “What a doofus!”