Naw it’s a sweet love story with a standard loss ending.
Rose’s motivations are primarily driven by her desire for freedom and independence. She feels trapped by her wealthy but oppressive family and her engagement to the controlling and wealthy Caledon.
She’s looking for a way to escape her life and find her own identity. This leads her to a deep emotional connection with Jack. Her motivations are centered on breaking free from the constraints of her upper-class background and pursuing a life of her own choosing, which ultimately culminates in her decisions and actions throughout the film. He represents everything she’s yearned for.