â€œThey were asking me, â€˜Why canâ€™t we have a tree? Is Santa coming to us? Who is Santa? What can we do for him?â€™ â€ PeetÂ tells PEOPLE. â€œThey felt left out, as I think most Jewish children do, and I was exploring different ways to make sense of it.â€
Dear Santa, Love Rachel Rosenstein is about a young Jewish girl who wishes she could have Christmas. The TogethernessÂ star co-wrote the book with writer Andrea Troyer, the wife of D.B. Weiss, who co-showruns Game of Thrones with Peetâ€™s husband David Benioff.
Peet, 43, and Troyer wrote the book two summers ago while their families were living in Belfast, Northern Ireland, where Game of Thrones films. During the writing process, they would test out portions of the book on their children.
â€œWeâ€™ll read them drafts at different points and see if their eyes start to glaze over in boredom,â€ the actress says. â€œThen, weâ€™ll cut those parts.â€
Even though the picture book was written for them, Peetâ€™s three children, Frances, 8Â½, Molly, 5Â½, and Henry, 10 months, arenâ€™t as excited as youâ€™d expect.
â€œWell, now theyâ€™re bored because theyâ€™ve read it so many times,â€ jokes Peet.
Courtesy Random House Childrenâ€™s Books
Frances is currently moving through the Harry Potter book series and plans to be a Dementor for Halloween this year.
Apart from Harry Potter, Peet and Benioffâ€™s children are big fans of the Cartoon Network show Adventure Time,Â and evenÂ have Adventure Time-themed pajamas and dolls.
â€œIâ€™m pretty sure itâ€™s inappropriate,â€ Peet jokes. â€œIâ€™ll come into the bedroom and Davidâ€™s lying on the bed with the girls and theyâ€™re all laughing hysterically, usually at some kind of fart joke. Anyway, itâ€™s too late to do anything about it now.â€
She adds, â€œI want to make it clear thatâ€™s Davidâ€™s influence!â€
Dear Santa, Love Rachel RosensteinÂ hit shelvesÂ Tuesday. Peet and Troyer are donating a portion of the proceeds to Seeds of Peace, a camp in Maine that promotes peace by bringing children from conflict areas, such asÂ Israel and Palestine, together.
â€” Chancellor Agard