I think she's TWAW.
I wonder what that 'misgendering' was about. Was it just reflex habit, that he was used to constantly referring to 'Mr Speaker'? Was it deliberate, to be rude to her? Was it deliberate, to demonstrate that using wrong sex 3rd person pronouns is (a) nonsensical, and (b) harmless?
Whatever the reason, she has not proven herself a particularly good Speaker if she cannot manage that MP's behaviour.