I didn't mind the mirror puzzle it self too much. It could be clearer but what I meant was if I immediately go to the bathroom it tells me to press e on the mirror. Ut nothing happens, then when the mirror breaks i can interact with it.
so my suggestion was to make it so either a) it's doesn't prompt me to interact when it does nothing
or b) open the same screen that you open when the mirror breaks but the mirror is not broken and it just says something small to add a bit of extra story/character :)
but regardless i think your game was quite good and i enjoyed it!