Where the Outback Ends (1989)

Daisy, a gun-toting grumpy old battle-axe, eeking out her life in a tumbledown shack in the middle of nowhere. Into her life stumbles Simon, a mild-mannered accountant. Together, they form an uneasy alliance that is hilarious to watch. Gradually he helps her rediscover her zestful youth in return for stability in his troubled life.