The girls see Sylvie as a way to access the things that have been kept from them all their lives. They have many unanswered questions about their own pasts—about the mother they thought they knew but didn’t, about the father they never got a chance to know, and about the world from which they themselves are descended. Sylvie is reticent—or unable—to answer their questions, insisting that it’s difficult to gain objectivity when it comes to people one is close to. Whether this is the truth or a carefully constructed lie to disguise the fact that Sylvie didn’t really know her sister, either, will be thrown into question as the novel progresses.