What is the main conflict in Witch Child by Celia Rees?

"Witch Child" by Celia Rees is an epistolary novel about a fourteen-year-old girl who flees the witch hunts in England and settles in a Puritan colony in America. After Mary's grandmother is executed as a witch, Mary flees her native England for a newfound colony in America, developing strong friendships and beginning to learn the power within herself as she finds her place in the New World. However, when the witch hunts begin in her new home, Mary fears her true nature will be discovered. "Witch Child" is a disturbing tale of a young girl tormented for things within herself which she did not choose.