It has always appeared that Bebe was basically in the care of Zenaida and Felix Sr, even before the Revolution. After the Revolution, Irina and Felix decided to leave Bebe with his parents while they went to Paris and tried to work things out. You have to understand that back then, it was rare high society to raise their own kids, Irina and Felix themselves had plenty of nannies to care for them as children, and for them it seemed natural that other's would do the actual upbringing for them. With this in mind, when Bebe finally came to live with her parents in Paris, it was a rather akward adjustment as Bebe didn't seem to get along with Irina but seemed very fond of her father. It's funny to look at the body language of Bebe when photographed with her parents.