1. Take a shortcut to the door from the left side of the Cleanliness Hall, open the door on the left side after entering, and you will see the elevator.

2. Ascend from the elevator to the top and enter the small bell tower. You can see the ladder from the outer plane of the bell tower around the side.

3. Climb the ladder to the upper platform, fall to the roof of the secluded church from the left, and walk along the roof to the end to reach the top corridor.

There are two holes in the corridor leading to the beam at the top of the secluded church. Jump from the beam to the platform protruding from the knight's feet. When you see Patch, you will see the door of the reborn mother's room.