Christina Perri tells PEOPLE what it's like to bring "A Thousand Years" to young readers and ... children's book-friendly and shift it more toward a mother and child's love," she continues.

Christina Perri Sings Lullabies with Daughters Each Night, but Says Her 6-Year-Old 'Loves Chappell Roan' (Exclusive) Christina Perri Still Watches the Twilight Movies More Than a Decade Later ...