Prison or Refuge?

Nameless in a doorless tower graced with seven windows, she is imprisoned.  Who is her jailer?  What is her crime?

After she discovers the secret of the seven windows, the nameless one, accompanied by two impossible companions, sets forth on fantastical journeys of exploration.  But, for the nameless one, learning her name may not be a welcome revelation, and the identity of her jailer will rock the foundations of a tower that has come to be as much refuge as prison.