Predictable and boring, and why not develop story lines and just end them?

Rating: 3/10 (24 February 2020)

The beginning of the movie (when it was about her parents and sister) looked pretty promising, and I wondered how this would develop throughout the movie. But the storyline just ended. From that point on everything was extremely predictable. I was hoping for an amazing plot twist at the ends, but the story just ended and the credits started to roll.
There was a lot they could have done with this story, but they didn't do anything with it.