It had potential! I really enjoyed the concept and was waiting to see the sister, but the plot was just executed so poorly. Not a fan of the sisters design, either, and the jump scares felt cheap. This film would've done much better with only a few minor changes! it felt more paranormal than anything, which doesn't quite fit the plot and feel of the story.
The ending was very abrupt and unsatisfying. Overall, I'd give the movie 2.5 stars, as I wanted to enjoy it, but it was disappointing.