A little detective game, nice attempt! Well done fleshing out characters’ personalities.
I’d suggest to try Renpy for visual novels, if you lean more towards story-driven games. You can learn it very fast for jams. It can give a more polished look due to its default UI. Also the save button is something that can be very important for multiple choice games, it’s already built in the Renpy engine.
Some voice over for character would be nice to add here, there are free packs with generic things like a laugh or a sigh. Visual novels are a tricky genre due to its limitations, so animations/special video/audio effects add the extra oomph.