Foreign Movie about a girl saving her brother from a orphanage

So this movie is a little older, it was subtitled, and I think in french. From what I remember as a kid it was around the early 2000’s when I saw this on HBO or Cinemax. The part I really remember was the girl escaping the orphanage  (or prep school) with her brother and climbing down a crazy steep cliff down to a boat where they paddled off into the sunset. I also remember that that scene was really red, as in the lighting was golden and red skies as they paddled away. Please help!

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