Where the Heart Is (2000)

Novalee Nation is a 17-year-old Tennessee transient who has to grow up in a hurry when she's left pregnant and abandoned by her boyfriend on a roadside, and takes refuge in the friendly aisles of Wal-Mart. Eventually, some eccentric but kindly strangers 'adopt' Novalee and her infant daughter, helping them buck the odds and build a new life.