The Phrenic Tests

Every ten years 196 seventeen year old boys and girls are chosen to participate in "The 'Running' Games.
"The 'Running' Games" are a series of challenges based off of your common sense, cleverness, and intellect. In shortened terms they're the Olympics for your mind.
Each country is required by law to choose one seven year old boy or girl to compete and are trained for ten years without their knowing. They're each taught how to fluently speak English, Mandarin Chinese, and Latin.
On the tenth year they mysteriously go missing and are brought to the island of choice to compete. The winner receives rewards beyond the imagination, but the last one to complete each challenge is eliminated and never to be heard from again.
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Molly Allen is this decades' candidate from Ireland and she was the person who was least expected to be chosen. She's average.
She's not insanely street smart, nor is her iq through the charts.
So her only question is why her.