Good Girls Go to Paris (1939)

Jenny Swanson, a waitress on a college campus, confides to English Professor Ronald Brooke that she is willing to gold-dig and blackmail her way to a Paris vacation. Her journey lands her in the New York home of Brooke's future in-laws: the wealthy and fractious Brand family. Jenny charms grandpa Olaf, and seems on her way to landing a rich suitor but her conscience and her heart may lead her in another direction...