Why did Anna Seward remain financially independent throughout her life?

Anna Seward was able to maintain financial independence throughout her life primarily through a combination of her inheritance and her commercial earnings.1

She never married, which allowed her to manage her own financial affairs and household independently, particularly after she took over the management of her father's finances following his stroke in 1780. Her financial stability was significant enough that she was not only able to support herself but also provide financial care for others, such as John Saville and his daughter in his later years. Ultimately, her economic security allowed her to leave a substantial legacy to her friends and family, detailed in a 20-page will and testament.1