During the Nine Years' War she served as a spy for Louis XIV, for which she was imprisoned at Käfigturm, tortured, and charged with espionage and high treason by the court in Bern.

[2] News of the incident soon spread across Europe, leading Christina, Queen of Sweden to invite von Wattenwyl to serve as her lady-in-waiting at the Swedish court.

[2] On another occasion, von Wattenwyl mastered a horse that had been regarded as untameable, leading to the owner gifting her a pair of double-barrel pistols.

[2] Von Wattenwyl's relatives were troubled by her aggressive behavior, considered unsuitable for a lady of her status, and pushed for her to marry.

[2] She rejected all of the candidates her family presented her until, against her will, she was married off to Abraham Le Clerc, a young Protestant pastor at the Church of the Holy Ghost in Bern.

[2][1] After her husband died she married a second time, in 1679, to the widower Samuel Perregaux, who served as clerk of the court and mayor of Valangin.

During the Nine Years' War, the French king Louis XIV had conquered Alsace, Franche-Comté, and Strasbourg and revoked the Edict of Nantes, which in-turn permitted the persecution of Huguenots.