Who are the main characters in dear George Clooney?

In "Dear George Clooney: Please Marry My Mom," the main characters include 12-year-old Rosie and her mother, a single parent named Mary. Rosie is determined to improve her mother's love life and hatches a plan to write to George Clooney, believing he would be the perfect partner for her mom. The story revolves around their family dynamics, Rosie's quest to find a father figure, and the humorous and heartfelt situations that ensue.