A film I cant remember the name of, but can remember the storyline?!

Can anyone remember the name of a film about a woman who worked in a kids hospital and went to do missionary work in africa or south america (not sure)!.!.!.!. the bus she was travelling on crashed and she was presumed dead!.!.!.however, her husband wit the help of one of the kids drawings of butterflies!!! traces her and finds she is still alive!.!.!.very vague but can anyone tell me the name or even the main actorsWww@Enter-QA@Com

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