Really loved the game as it has a killer atmosphere and gameplay was easy enough to understand, although as a critique, the killer part was mildly confusing and it took me waaaaay too many tries to figure out who and what pointed to them, but I figured out both of those parts eventually. I think for improvement, maybe sprinkle in some more clues or scenes or adjust the current ones. Example of some ideas :D
Spoiler???
The postmark on the letter turned into a seal mostly because the current one looks way too much like a regular postmark.
The letter maybe being incorporated into the talking scenes of the fox and badger, cat and badger.
MORE MUD ON HER - sorry- but the added mud on maybe the skirt hem and such would make those boots and prints more obvious but still something to search for as right now she has minimal to no connection to the mud
Hope it helps even a little