"Das Tagebuch der Baronin Eveline von Massenbach" is a very interesting book.
Eveline was called "Eva" by the royal family, she accompanied Olga often to Russia and met her parents Nicholas I. and Alexandra (Charlotte).
Olga's mother liked Eva and begged her to stay with Olga. Shortly before her death the Empress Alexandra asks where Eva was. (She didn't make it in time, Olga departed earlier.)
In the book are many russian names and people mentioned who met Eva, in Stuttgart, the rest of Germany and Russia.
When Olga's niece Wera arrived in Stuttgart, she behaved very badly.
Eva wrote in her dairy that it is not good to keep the girl in the dark why she is brought here (to Württemberg).
If Karl and Olga didn't take care of Wera - she would have been given to a hospital or institution.
But no one told Wera and she felt betrayed by her parents who gave her away and her childless aunt who she made responsible for the seperation from her family.