My Thirteenth Winter is the story about a girl named Samantha Abeel. At the age of thirteen, she was diagnosed with a math-related learning disability called dyscalculia. This disability also affects her normal life. She is not able to tell time like other people are. The story is about her struggles in math and social life.
Signs of her disability have shown up all her life, but Samantha only knew about her problem when she turned fifteen. One symptom that occurred often in her youth, especially in junior high, was panic attacks. The panic attacks consisted of stomachaches and a feeling of nausea, even though she never actually threw up.