I’ve found the other Charlotte Grote! Around in the 18th century (when the artist was active)- no wonder she looks like a skeleton now… https://www.reproduction-gallery.com/oil-painting/1690359289/charlotte-grote-by-sir-joshua-reynolds/?srsltid=AfmBOoqMiqXvc2mXZGjAqoeNzpQTP7nCh7pl3eKUirlHaNG-bvUkRjeG