From New York Times bestselling author Susan Verde, writer Courtney Sheinmel, and illustrator Heather Ross comes a warmhearted picture book story about expressing gratitude, perfectly modeling how to write a great thank-you note When a surprise comes in the mail from Grandma, Sallie wants to text her right away: Thanks, Grandma But wait--how will Grandma know what Sallie is thanking her for and how it makes her...