Such a Long Absence (1985)

Disgusted with the ways of the world and her cruel family, Aggeliki is what stands between her catatonic older sister Alexandra and their decision to confine her to a public mental institution. However, when the family finally locks Alexandra away in a psychiatric hospital, Aggeliki must summon the courage to rebel and take matters into her own hands. It is a challenging task, but with their freedom already at stake, can Aggeliki defend their fragile independence against those who seek to take it away?