A well polished and enjoyable game! I liked how the horror built up, then eased off, then hit the player like a train, eased off again, and then "oh no, we're stuck here aren't we?". I also really liked Nika and found her design and writing very cute. Lastly, I appreciate the restrained storytelling. There's enough clues scattered about from item descriptions and dialogue to piece together Lera's personality, backstory, and motivation.
I also read the author's note at the end, and am surprised this was your first game! This is really well put together for a first game! I hope you continue to have fun and enjoy making stories, whether they are games or not.