"*thot laugh*" had me rolling.
She totally heard what he said at the end there. So she comes to the rescue, filled with both pride and love for her beloved senpai for being so confident and for standing up for her. Just look at the smile and blush at the end. Beaming happiness.
This faceless schmuck is gonna get dissed so hard by Nagatoro that he won't be able to leave his house for a week.