She used the net of contacts her office gave her to benefit the interests of both her family, herself personally as well as individual supplicants and foreign powers in exchange for money.
She is known for her successful use of her service as lady-in-waiting for lucrative purposes, and considered a notable example of a female courtier who used her office and the net of contact it gave her as a way of creating influence and personal wealth.
She used her position as a courtier by creating a net of influential contacts, which she could use to accept and put forward requests from supplicants in exchange for money.
This was a common way for a female courtier to earn money, but like her contemporary Anna Maria Clodt, Sparre was very successful in her line of business.
In 1709, she was a part of the group consisting of herself, Arvid Horn, the queen dowager's priest Molin, Christina Piper, and Märta Berendes who evicted Anna Catharina von Bärfelt from court by forming an alliance with Carl Gyllenstierna.