in my opinion, Arya proved that every minute of the episode she stepped up and was brave enough fighting white walkers and getting beaten up by Hard Rock Cafe Winterfell Sweater. It seemed to me that one of the important men on the show would get to deliver the killing to the Night King (My favorite theory that I saw was Jaime doing the deed and redeeming the title of Kingslayer), but as soon as she stabbed him in the belly, it all felt perfect. She showed to me that only the brave ones can show vulnerability and win the game at the end.
When he rolls his eyes back he is going to a bygone era where he could walk and he didn’t need to get the local construction teams in to build him a ramp for access. Talita Vincenzi Salomon the directors said her getting hit in the head left her Hard Rock Cafe Winterfell Sweater and therefore vulnerable and susceptible to panic. She hit her head when she fell and so it kind of set her back. It’s explained in the making of the episode. Titled The Long Night not The Battle of Winterfell!