I discovered the evil effects proceeding from this pernicious advice on the very same evening. I remarked an unwillingness on her part to speak to me before my brother; and, as soon as she entered into discourse with him, she commanded me to go to bed. This command she repeated two or three times. I quitted her closet, and left them together in conversation; but, as soon as he was gone, I returned and entreated her to let me know if I had been so unhappy as to have done anything, through ignorance, which had given her offence. She was at first inclined to dissemble with me; but at length she said to me thus: “Daughter, your brother is prudent and cautious; you ought not to be displeased with him for what he does, and you must believe what I shall tell you is right and proper.” She then related the conversation she had with my brother, as I have just written it; and she then ordered me never to speak to her in my brother’s presence.

These words were like so many daggers plunged into my breast. In my disgrace, I experienced as much grief as I had before joy on being received into her favour and confidence. I did not omit to say everything to convince her of my entire ignorance of what my brother had told her. I said it was a matter I had never heard mentioned before; and that, had I known it, I should certainly have made her immediately acquainted with it. All I said was to no purpose; my brother’s words had made the first impression; they were constantly present in her mind, and outweighed probability and truth. When I discovered this, I told her that I felt less uneasiness at being deprived of my happiness than I did joy when I had acquired it; for my brother had taken it from me, as he had given it. He had given it without reason; he had taken it away without cause. He had praised me for discretion and prudence when I did not merit it, and he suspected my fidelity on grounds wholly imaginary and fictitious. I concluded with assuring her that I should never forget my brother’s behaviour on this occasion.

Memoirs of Marguerite de Valois, Complete — Part 18

Hereupon she flew into a passion and commanded me not to make the least show of resentment at his behaviour. From that hour she gradually withdrew her favour from me. Her son became the god of her idolatry, at the shrine of whose will she sacrificed everything.

Memoirs of Marguerite de Valois, Complete — Part 18