Alessa Grigsby (also known as Alessa da Silva) - a girl from West Virginia, came to London nineteen years after the Battle of Hogwarts - to attend Hogwarts School of Witchcraft and Wizardry.
It's not just as simple as reading, Alessa's life experience is so confusing. Not long after she went to Hogwarts, her sister (mother) Rose died. She lost her eyes and died in pain after being cursed by a demon. The demon turned out to be Alessa's evil side...
(The novel has a strong religious flavor.)