In 1662, she married secondly to riksråd baron Gustaf Posse af Hedensund till Arnäs (1626-1676).
In her autobiography, she commented that she did not wish to become a maid of honour as she disliked the life at court and accepted the office only to avoid offending the queen, and that she in fact seldom served, having to take leave to attend her sick mother.
She had an important position at court, being treated with familiarity by the royal family: King Charles XII of Sweden referred to her as 'Old Aunt'.
In 1709, she participated in the court camarilla consisting of herself, Arvid Horn, the queen dowager's priest Molin, Beata Sparre and Christina Piper who formed an alliance with Carl Gyllenstierna and successfully evicted Anna Catharina von Bärfelt from court.
[3] It is written in the form of a litany of sorrows, depicting her misfortune caused by the death of her husbands and children, describing life as a martyrdom possible to endure only by the help of religion.