From the description:
"Ten-year-old Evelyn Bucknow lives with her not very responsible young mother, Tina, on the outskirts of a small Kansas town. The Center of Everything follows a clean arc: How Evelyn, a gifted but poor student, negotiates the pitfalls of her background to become a college student. The book shows the scary tenuousness of poverty. When Tina's car breaks down, their life falls apart like a flimsy cardboard edifice. Evelyn can't get to school, Tina can't get to work, and unseemly relationships with men who own cars develop."
4.3 stars on 143 reviews, with 13 negative. 358 pages