That is seriously cool, great job! I love the fact that the pose changes each time. Perhaps you can have her covering her face from a distance and then, like the weeping angels, when she gets too close she uncovers her face and stares right at you.
The lights going out in the living room worked really well too. I think you’ve really nailed the effect. I had an idea with something similar where the player is in a corridor with a “weeping angel” style creature pursuing them, and the lights go out in the corridor with the door at the end open, and the player suddenly hears giggling and rushing footsteps right behind them so they have to run like crazy to reach the door. A simple variation on the “water horror”.
Are you doing this all in blueprints or mix of C++ as well?