The firefly summer

"For as long as Ryanna Stuart can remember, her summers have been spent with her father and his new wife. Just the three of them, structured, planned, quiet. But this summer is different. This summer, she's received a letter from her grandparents-grandparents neither she nor her dad have spoken to since her mom's death-inviting her to stay with them at an old summer camp in the Poconos. Ryanna accepts. She wants to learn about her mom. She wants...