they seem to be basically remaking the entire game for the new update lol, but from some of his post it looks like its in the final stages of development (sourced from their patreon)
iirc after you finish the puzzle you will automatically see her... as for the resulting quest from it first you will need to find the master key and check out some previously blocked rooms... past that i have no clue.
do u have the boney key yet? its at the statue in the main room. go to the third floor and do the sds puzzle (first read the little plaque, and match the sins and pictures by pressing the buttons in the order they were said on the plaque thing.
i do not know why, but when ever i try and play the game it crashes, ive redownloaded it twice, yet it still crashes. i only just open the game then before even the "above 18" bit it just closes the game.
(idk if this is a android problem bc thats what im on)