Who is Hannah Popplewell / Medusa from Flashman & the Angel of the Lord: From the Flashman Papers, 1858-59 and what is their importance? "Flashman_&_the_Angel_of_the_Lord:_From_the_Flashman_Papers

A fictional character, Hannah first appears on a balcony in the Wager House, Harper's Ferry, VA, as narrator Sir Harry Flashman and Joe Simmons order breakfast on the morning after John Brown's raid. She has "bottle-red hair tumbling about shining ebony cheeks, a plump black hand clutching a silk peignoir round a form which would have done credit to a Turkish wrestler, and bold protruding eyes" (pg. 285) regarding Flashy with desire. She flashes him a dazzling white smile.