score:10
A work by Rainer Maria Rilke, Nimet Eloui and Edmond Jaloux in 1952, 'His Last Friendship' or 'Derniere Amite Engl.', has the following paragraph (from snippet view on search page, emphasis mine):
... Nimet Eloui Bey's father, Achmed-Khairi Pasha and her mother, were both of Circassian or Tcherkess stock, and were second cousins. Her mother was the daughter, and her father the nephew of Khairi Pasha, Egyptian minister in the last century. Nimet's father was of an admirable bearingβhe passed for the handsomest man in Egypt, and he must have been, to judge from a from a portrait of him in Caucasian costume, which I always noticed was at the head of his daughter's bed.
If you can find a physical copy of the above work you may get more information.
Upvote:2
The Nimet mentioned here did indeed marry Nikolai Mestchersky (correct spelling) and died August 4, 1942. She's buried in the Orthodox Cemetery of Sainte-Genevieve-des-Bois about 30km south of Paris. The tombstone calls her Princess Irina (Nimet) Mestchersky. On a different line, in Russian, it says she was born Khairy. See findagrave
Aside from Rilke (who as a source does not have a great reputation for accuracy) I can't verify that it is the same Nimet who was married to Aziz Eloui bey. It does sound plausible.
Upvote:7
I've literally just got hold of a hard copy of Rainer Maria Rilke's His Last Friendship, and so I thought I would take the opportunity to expand upon justCal's excellent answer. (It seems as if he only had access to the version on Google Books, which is rather limited.)
Here's a sketch of Nimet Eloui Bey's life, chief amongst them being Chapter V of the aforementioned His Last Friendship (HLF).