The Last Days of Chez Nous (1992)

Vicki returns to her elder sister Beth's house in Australia after an affair in Italy. Beth, with a teenage daughter, has become involved in something of a marriage of convenience with Frenchman J.P., and her rather prickly houseproud ways are causing frictions counterpointed by Vicki's more laid-back and indolent air. When Beth goes off on vacation to the outback alone with her cantankerous father to see if they can finally get to know each other, relationships in the household start to shift.