Born in a stable, she was recognized as a genius at an early age.
Born into a high position, she overheard many complaints when she was young.
People would let their tongues loose around her, assuming she wouldn't be able to understand them, so she heard a lot of idle grumbling from servants and such.
However, Miko was able to understand them - and provide very specific advice right away.
Rumors of her spread throughout the land, and she gained enormous popularity as a holy person.