Mostly from the French Wikipedia
https://fr.wikipedia.org/wiki/Ang%C3%A9lique-Nicole_Carlier
https://www.executedtoday.com/2013/06/19/1699-madame-tiquet/
A celebrated beheading in Paris,
On Sunday, June 18 1699, almost a quarter of Paris flocked to see the beheading of one of the city's most beautiful noblewoman. Madame Ticquet (1657-1699.)
Both of her parents died when she was very young, at the age of 15, this reputed “masterpiece of nature,” inherited nearly half of 1 million crowns of inheritance, a huge sum of money in the 17th century. Kind, witty, and agreeable, she was the most sought after woman in France in her youth. She fell in love with a older gentleman, Claude Ticquet, a respected judge of the high court of Paris nearly 30 years her senior and became his wife at the age of 16 because she loved him.
After the marriage and the birth of 2 children it turned out her husband had lied both about his family's fortunes as well as his character. Turns out, even the huge amount of dowry he supposedly gave her to win her hand was actually a from loan he took. In fact, Mr. Ticquet had no money at all and was loaded with vast amount of gambling debts. In order to pay for the huge loan he secretively stole from her wife's inheritance after the marriage and made her the debt's guarentor. Mr. Ticquet in fact was so extremely in debt that Angelique was threatened to spent half of her inheritance money to pay for his old gambling debts.
But Mr. Ticquet also proved he was both controlling and extremely jealous. Needless to say that the marriage was broken by her husband's lies. However because France forbid divorce they were forced to live together. When she fell in love with one of France's dashing generals, the Count de Montgeorges. Mr. Ticquet locked her in their mansion day and night and forbid her from exiting the house. She was imprisoned in her own house for 3 years, while every day, Mr. Ticquet was the only one to carry the house key all time with him, even while he visited his mistresses. Despairing at last of unable to get rid of either her abusive husband nor his horrible debts, Madame Ticquet tngaged the services of her porter and that of a freelance assassin, and on the evening of April 8, 1699, these two assassins ambushed Claude Ticquet and shot him three times.
However, miraculously, Mr. Ticquet survived. All of the bullets that struck near his heart was non fatal. And soon people called his miraculous survival a providence from God. Of his enemies, he said, “I have none but my own wife.” Madame Ticquet was immediately arrested, and although many nobles begged for her mercy, including her lover and her brother, the King Louis XIV insisted upon the sentence, warning that unless Madame Ticquet's head should drop, no husband could feel safe in his house.
On Sunday, June 18 1699, hundreds of thousands crowded the streets and windows. Nearly a quarter of the whole city. The 42 year old Madame Ticquet came humbly, dressed in white, then "mounted on the scaffold barefeet with the imposing and majestic step which had always been admired in her." When the headsman Sanson strode forth to help her up, she thanked him, and kissed his hands with her lips to show she did not hold him in disgust or horror. She knelt on the platform, said a short prayer, and even kissed the very block where she would lay her head. The infatuated the headsman was so nervous it took 3 strokes to stuck off the head which had turned so many princes and dukes.
“Never was there such an exquisite thing” than Madame Ticquet’s lifeless severed head, one of her female friends discomfitingly enthused when it was put on display on the scaffolds according to the legal custom of the time so that women everywhere could learn from her horrible example.
It was left on the scaffold a long time according to "in order that the people might have the gratification of seeing it." Her husband eventually collected all of her wealth. Her lover, the Count of Montgeorge was crushed by her lover's death, and begged permission from the King to travel for some months out of the kingdom, that he might be relieved from those disagreeable objects which every day struck his sight and renewed his sorrows.