Aunt Marge is women's fiction and suspense, with touches of Stephen King's Dolores Claiborne, Daphne du Maurier's My Cousin Rachel, and other classic tales that are close to gothic in mood.
Grumpy people abound in literature, from Ove in A Man Called Ove to Minnie Jackson in The Help to Ebenezer Scrooge in A Christmas Carol. Why they are grumpy and how/if they overcome that is a gold mine of storytelling possibilities. Aunt Marge is a woman we often don't like. Putting Gwen, a vulnerable...