Thanks to Vaishali for suggesting this movie

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Plot:
A young girl inhabits an isolated island with her scientist father and communicates with a reclusive author of the novel she’s reading. It is an existence that mirrors that of her favorite literary character, Alex Rover, the world’s greatest adventurer. But Alexandra, the author of the Rover books, leads a reclusive life in the big city. When Nim’s father goes missing from their island, a twist of fate brings her together with Alexandra. Now they must draw courage from their fictional hero, Alex Rover, and find strength in one another to conquer Nim’s Island.

[PAID] 100% Legal Download: Nim’s Island [2008]

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