Investigate this place at night

You wait until it's nighttime. You silently approach the church covered by the darkness of the night.
You cast a "knock" spell to open a door in the back of the church, and it clicks open.

You are inside... they are sleeping, you manage to find a partially burnt parchment saying something about the legendary magic stone from another world, and a reference to the local lord, but it's too damaged and you can't find more details.

You approach a big grimoire on a pedestal, you step on a hidden glyph carved into the floor, and you feel a terrible headache.
The pain is so strong that your vision blurs, and you fall ****.

You wake up tied up, you try to scream, but you are gagged and tightly tied. A masked nun dressed in revealing clothes holds a wooden paddle.
She pulls a lever and lifts your legs to expose your ass.

The nun explains that they are a special guard specialized in thieves like you, and she will make you confess. You struggle, and she spanks your ass.
After a long spanking, you are babbling and drooling, beggin for mercy, you ass is red and you buttcheeks burns.

You feel a terrible pain and humiliation. She takes off your gag and asks you the truth. You have doubts and you don't know what to do, so... she puts the gag again in your mouth and spanks you again 100 more times.

When she finishes, you are convulsing, you think that you are going to throw up. She makes your smell a potion and you feel better, but the pain is killing you...
She takes off your gag again and say "Speak the truth, and I will give you the potion, the pain will be gone"

You tell her that you are looking for a magic stone, an artifact from another world, and that you found some information about the noble lord of this town, maybe he can help you. You also tell her that you are not a threat, and you just want to return to your world.
She gives you the potion and puts the gag again in your mouth. "Good girl. You speak the truth, no more spanking."

She sends a note with a magic white raven, and after some time, the raven returns. She opens the note and says.
"Sorry darling, you are a threat to the noble lord; I must take care of you."

The nun makes you wear a tight suit, and you are encased in a secret place. You find you end there, and what happens is only told in a Forbidden Tale, the book is hidden in the church's library, and speaks about your last moments and the merciful execution.

Bad ending
She knows too much ending

Forbidden Tale extra:
If you dare, you can check for extra scenes at https://www.patreon.com/posts/diamond-endings-84574475
Check "Merciful Execution"