Kraftprobe (1982)

Paulina (Kristin Genee, daughter of director Heidi Genee) has had to suddenly shoulder the burden of taking care of her mother's responsibilities at home while the latter goes off to a rehab center for alcoholics. Unfortunately, Paulina also has to work at a drive-in to cover the bills, handle the visits of a social worker, and take care of an unwanted teenager hiding out from the law -- making school and homework seem like child's play.