When my ten-year-old daughter started showing an unusual interest in checking the mailbox, I thought it was just a passing phase. Little did I know, those letters would unveil a secret that not only moved me to tears but also changed our lives forever—and for the better.I’m Erin, a 40-year-old single mom devoted to my daughter, Lily. Since her father passed away three years ago, it’s just been the two of us. Lily is my world, a bright and curious girl who fills our home with joy and laughter. We’ve built a cozy life together, with me working from home as a freelance graphic designer, allowing me to spend quality time with her. One evening after dinner, Lily suddenly asked if she could check the mailbox. It was odd, considering she had never shown interest in the mail before.