Return to the Phantom

A psychology student, who has two semesters left before she gets her doctorates, is suddenly whisked away into the mystical world of 19th century Paris. She ends up staying and living in the Opera Populaire, where madness abounds.
The Phantom of the Opera enlists her in his schemes.
Madame Giry and Richard Firmin become parental figures to her.
And Christine Daae and Meg Giry are practically her sisters.
There is no obvious way out from the nightmarish daydream that seems so entirely natural, and she has no way to contact those from the 21st century.
Will the story stay the same, or will she change everything?
Does the Daroga exist in this timeline?
What happens when the Phantom slowly starts to fall for her?