Mi madre, my father (2018)

Reared by an abusive, pill-popping mother and an absentee playboy father, six-year-old Valentina must fend for herself. She does what she can to craft the illusion of normalcy: makes herself lunches that look just like the ones her classmates tote, dresses and grooms herself expertly, and lies to cover up for her mother Anita's erratic behavior.