The Well Digger's Daughter (2011)

It's the beginning of the WWII. South of France. Patricia, 18, is the oldest daughter of a well-digger, Pascal, who considers her a princess because of her moral qualities. She's kind, devoted. One day, she briefly meets a young man, Jacques, the son of Mazel, owner of the shop where her father buy his material. He's handsome and teasing. Her father's friend, Felipe, would love to marry her, and he invites her to an aviation show. She accepts his invitation only because she knows Jacques is a pilot and will be there. Soon, she'll carry his child, and he'll be gone, and the family will have to deal with this out-of-wedlock pregnancy...

Source: TMDb