Not counting a picture frame seen from a distance, the title character's first appearance takes place 47 minutes into the film.
Although Claire is Laura's older half-sister in the film, in reality Laurence de Monaghan is 2 1/2 years younger than Béatrice Romand, and the actresses were approximately 16 and 18 respectively at the time of filming.
This film is part of the Criterion Collection, spine #347.