Once you restart the time, it's time to learn the second secret of the woman - the secret chamber. Go towards the room with the bell and then to the corridor. You don't need to hurry, but you must complete all actions before 2 PM. Use the marked door on the corridor.
Hide in the closet in the room with paintings. Wait until Willow Blue comes in.
The woman will move towards one of the paintings after entering the room. She will start entering the code and you will have some time to press space and activate the power of the Trinity mask. This will enable you to learn the code to the secret chamber.
You must use black magic to enter the chamber. All clues can be found further in the guide. Use F1 to rewind time.