The commissioner has detected a mark on your skin that does not bleed.
This proves that you have had union with the devil. Skin that does not bleed if pricked with a needle is unnatural. What is unnatural, is magic. Now the "indiciam ad torturam", the proof that justifies the torture, has been found.
Your conviction as a magician, which is inevitable, needs the full-proof.
A half-proof is three testimonies of witnesses, like the one given by your neighbour. The non-bleeding needle check together with her testimony also equals a half-proof. Now the only thing missing is the second half of the full-proof. That is your confession. It will be granted by the torture.
Now your arms are chained together over your head and you are pulled up to the ceiling while your feet are bound to a bar. One of the executioners jumps on it to increase the pressure on the limbs.
The arms will snap out of the shoulder as the weight gets to great. They say that some people never got cured afterwards and remained with paralized and crippled arms. Well, - until they were executed.
Behind the left window you will see a spectator watching from outside. In a few minutes he will run to the village to tell everybody that the court has found enough proofs of magic to get you in the torture interrogation. Then, many more people will remember that they had you under suspicion for a long time. Your neighbor will be glad.
Don't bother to argue or oppose the accusations. That would be further proof of devilish impenitence. One who is in the spirit of God will be modest and humble. There are already enough indications of magic against you and the court wants to know when, why and how you did your magic deeds.