Reincarned with a deities Harem (Tome 1)

The Worst Villainess.

We entered the small, dark room, our guide closing the door behind him.

“I did as you asked. I fed her every day, adding a little of that powder you gave me... By the way, what exactly was that powder?”

“You don't need to know, just do as I asked,” Azef replied curtly, which had the effect of shutting the man's mouth and discouraging him from continuing his curiosity.

“Well, let's get closer. She's been undergoing this treatment for at least five days.” I stopped; what was certain was that her body was already imbued with it, so we could do whatever we wanted with hee. But I needed her to get past that state, so I looked at the man. “You're going to continue giving her this product, and if she refuses to eat, put it in her water.”

“Yes, ma'am.”

The poor innkeeper wondered what this couple could be up to and was surprised to see such a young girl displaying such malice toward a woman, to the point of kidnapping her and making her ingest a questionable product.

He could denounce them and perhaps save this poor woman. This might be wise, because he had the impression that this couple's intentions toward this unfortunate woman were not very praiseworthy; on the contrary, it seemed as if they were on a path of no return, and this woman would not be spared.

But far from denouncing them to perhaps save her life, he preferred not to get involved. He had been generously paid, to the point that he could, if he wished, close the inn and buy a magnificent house in the capital and live there like a nobleman for the rest of his life.  Moreover, he also felt that if he denounced them, his very life would be in danger. He was certainly a big shot in his own small territory, but he knew that these people—noble or commoner—were dangerous.
A danger that oppressed him so much that he refused to fall victim to their madness.
He was fine as he was; there was no need to get into unnecessary trouble.

I closed my eyes, immersing myself in Mylène's memory. While the Duke wasn't there—little Mylène being barely fourteen—Frederik De Solsten had announced that he wanted to spend a few days at their manor to learn from the knights of Hosten.
Her brothers - these brats -  had seen this as a unique opportunity to introduce Gabrielle to the young man, but the head maid had overheard a conversation between Edward and Karl.
The former was telling the latter that he had the impression that his friend seemed more attracted to Mylène.  Not wanting Gabrielle's chances to be ruined, Sofiane and the head maid had drugged Mylène for days, making her unable to walk straight or speak intelligently. She had become somewhat of a moron, and when Frederik finally arrived, he had discovered a deranged Mylène, unable to hold a conversation.

This incident caused Mylène serious health problems later on, preventing her from leaving her room for months, writhing in pain and spasms. Later, Mylène also discovered that these products had caused her infertility.

I stroked my stomach; not that I wanted to be a mother or anything, but that these people had dared to do so much harm to this body, I would never forgive them and would make them pay in the worst possible way.

I moved forward before removing the blindfold from the head maid's eyes. She blinked several times, trying to adjust to her surroundings.

Her eyes and her head hurt. Her mind was fuzzy; she felt as if her body wasn't her own, as if it were outside of this space, outside of time. She heard noises in the distance, the darkness even seeming to engulf her sanity.  Her mouth was pasty, but her throat was dry. She was starving, these people feeding her only once a day, and the amount of water was so minimal that she knew she was dehydrated—not to mention the water tasted strange, was it even drinkable?
She heard rustling again, moving her head where her senses were leading her, hoping they weren't fooling her.