i prevented the sister from getting smashed by talking to her and leaving the dialog open until the music changed. it wasn't until later i figured out what i was supposed to do to save her from the chandellier.
Yeah there are some weird time related bugs. But! I have tried to play this game as intended and beyond that one thing, I have loved it. You as a team have done an amazing job. I highly recommend buying this game to everyone. It is such a neat horror/puzzle experience.
