Lady Hope
Lady Hope was a prolific writer, with some 30 items (dating from 1876 to 1909) listed in the British Museum General Catalogue of Printed Books and the U.S. National Union Catalog.
She and some Christian friends began a ministry to lower-class families in Sussex, beginning with Bible studies for girls, and eventually leading to coffee-houses as substitutes for the pubs, where working-men were ruining their families through drink.  See her book Our Coffee-Room (1876).
I suspect it was this work that led to the reported meeting with Darwin, as the context suggests she may have been seeking a meeting place in the neighborhood.