Kruse had been servant of King Christian's spouse, Kirsten Munk.
In 1629, Christian was invited by Marsvin to her estate, where he met Kruse, and she became the King's mistress after his breakup with Munk the same year.
[3] After the King's death in 1648, Corfitz Ulfeldt and Kirsten Munk tried to sue her.
They sealed her estates, turned her and her daughter out of the royal palace and demanded an extraordinary trial, where the law could be set aside.
Kruse's enemies saw to it that she was buried unnoticed and without ceremony in a cemetery outside the city walls.