Seeing Arya smile again made Henry tense up for whatever she was going to do or say, yet when Anya did the same thing, was was really made Henry worry, yt his worrying turned to dumbfounded at what Arya said. Anya apparently though the same thing as she started to correct her sister only for her mouth to get covered and Arya continue using the wrong term. So when she asked if he had any special powers he just stared at her wondering if she was really trying to make Henry believe her. "Well I seemingly have the power to make everyone hate my guts, and I also have the power to call out bullshit." Henry then mumbled to himself now pretty sure that Arya did hit her head.