The movie is about a girl who was sent to go to school abroad. She met a rich man who invited her to get into his carriage and seduced her. He got into her panties with his hand and they agreed to meet every weekend. She studies at school, then go to a motel to see him. After all, in the end we can see her standing on a board of the ship where she was recalling past events.
Quote from the below Wikipedia page of the movie, this is at the end of the movie:
“Though devastated, the man marries his arranged bride, and the girl boards a ship days later to return to France.”