Great game. Couple of suggestions, if I may:
1- The locations and the dialogues are sometimes contradictory, or don't make quite sense. I believe you've made some modifications at some point but didn't update the map?
Examples: Theresa seeing Dieter on the croquet lawn from the Veranda, whereas on the map the house is between them. Or Lucas and Lune having to pass by Theresa's room to go from Guest House to Workers Quarter. I am also confused about the Jungle, are there two Jungles? One where the Jungle Entrance is, and another between Railway and Secluded Beach? because if I recall Aisyah is said to have crawled from the Railway through the Jungle to the secluded beach, and Dieter to have carried her from the secluded through the Jungle.
2- Just a minor ick really. The dialogue seems too AI-generated at times. Especially the negations of "It's not... it's...". I'm not too picky about it, but it does make me grimace every single time.
3 - SPOILER: Last scene when I tell Rose and Lune that Lucas lied to them, there's a small typo, it is Lune who breaks the necklace, not Rose.
Things that impressed me:
I thought it was gonna end with the arrival of the cavalry, but oh boi was I delightfully wrong.
I loved the glossary that gives information about the geography and the history. Not only loved, but I am genuinely thankful for those.