Mrs Anstruther-Thompson
Isabel (née Bruce), second wife (m. 1891) of John Anstruther-Thomson (1818-1904) of Charleton, Colinsburgh, Fife (no p in Thomson); he was a noted Master of Foxhounds, but his children, by his first wife, Caroline (née Gray), included the intellectual Clementina (Kit) Anstruther-Thomson, an intimate friend of the writer Violet Paget who had offended James with a satiric portrait of him in the short story Lady Tal (1892) published under her pen-name Vernon Lee (perhaps James didnt know of the relationship?)