Mademoiselle Schneider was the Empress's reader, but taught the children Arithmetic, starting during their arrest at the Alexander Palace, and subsequently at Tobolsk.
After the family left for Ekaterinburg the entourage was divided. Mlle. Schneider, Countess Hendrikov, General Tatishev and Volkov were sent to prison, where most of them were subsequently shot.
I have never quite worked out why. The remainder of the suite were spared and set free.
I wonder if the IF ever found out that these people had been shot ?