There were an awful lot of them because of the Civil War. Nathaniel Hawthorne's wife barely escaped being a spinster (she was an invalid of the put-upon sort, but marriage cured her) but her sister Elizabeth Peabody never married. She was a strong-minded woman, very active in education, abolition, women's rights, etc. Suppose she's next to be slandered.
Louisa was unconventional (she once told an interviewer that she thought she was a man's soul in a woman's body). In context, she was talking about her early upbringing (her father Bronson was a reformer and a bit (ok, a lot) impractical) that forced her both to work and think like a man to support the family (since Bronson never had two cents to rub together and couldn't have kept it if he had)
A guilded-age cat lady.
I wonder who she voted for? Oh, wait.