I absolutely love the art & character design in this! It feels like something between a storybook and an old photograph - perfect for the vibe of the story!! Gorgeous backgrounds (especially in the manor house!). The sheer number of CGs was super impressive, and the deep black framing really added to the eerie vibes as things went on (that waiver-signing... creepy!). The characters' dynamics felt strong too, and the way Emily's past naturally came up along the way felt smoothly done. Very effectively spooky sound design too, especially as the night progresses...
One note would be that the font doesn't seem to render hyphens and apostrophes properly, which leads to some blank spaces here and there. I also got a crash after turning down the cake twice and then heading for bed (image of the error code below, if that's helpful!). 
Apart from that, wonderful job!! Huge congrats!!!!