I loved your game! As others have mentioned, the art style is gorgeous, the music fits incredibly well (very spooky), and the story was enjoyable. I particularly liked how the environment subtly changed, from the upstairs bedroom door disappearing, to other smaller touches. The game also reminded me a lot of Mother 3 (particularly the castle infiltration level, if you've played), but did not feel derivative due to the unique story. I also liked the staticky black effect around the game.
I have just a couple suggestions after playing:
1. As others have mentioned, the beautiful character portraits contrasted a little bit with the sprites. I think by just adding a few more touches to each would help (especially Rachel's face, which seemed almost eerily flat).
2. A few instances of dialogue felt a little awkward and out of place. One that stood out to me was when Officer Duane said: "I can't promise that she's okay, but we'll figure out what's going on." This was troubling, and almost felt out of character for a 9/11 responder. I would look over your script for similar occurrences.
3. This one is super minor, but I would find a different way of getting the player to enter the archive room. It felt weird that I used Lahey's key, when he would have needed it to enter the archive and lock the door.
But overall, this game was a real treat, and I thank you for sharing it.