i recommend playing the game again, or reading some comments below! there’s so much hidden in the writing that you probably didn’t realize upon first playthrough :) we don’t want to spell everything out as that’s not really fun, but as a hint, think about what the game revolves around (esp ending 3), and everything mary’s mentioned about her past!
if you enjoy more direct storytelling and reveals, i’d recommend you check out MIMCO here: https://cinnamew.itch.io/mimco though it’s not as polished