Flora Nolan is the daughter of Christopher Nolan and Emma Thomas. She briefly appears in Interstellar as a girl on the back of a truck. As well as being featured in Oppenheimer, both of which are directed by her father.
Following the tradition of Nolan naming his working titles after his children, the working title for the film Interstellar was "Flora's Letter", while Batman Begins had the working title "Flora's Wedding" before it was changed to "Intimidation Game."