I liked the 2D art and visual novel style gameplay. The character designs and dialogue to build characterization does a good job. It's short and simple, but there's ultimately only one choice to make allowing the sister to leave no matter what, I played through twice and it seems to be the only outcome. I wish I had the option to play a little as the brother and have a bit more real choice on who gets to escape. You also mentioned you ran out of time to add audio, and having even just a basic looping soundtrack for background music would have made a big difference. Lots of really good VN style potential in a game like this. 10/10