Wen Qing, in some capacity. Miss Daenerys works around the dragons, if they have comparable records she might have access to those, too.

( two women to start with, and assigned opposing halves of the citadel for what that was worth. )

I'll assist, once we know more. Other than the sort of knowing that gets passed along as common knowledge not actually common to anyone not here at the time.

( Thankfully, in time following, at least the Doctor offers up more insight into the signs and symptoms externally. )