Bluestocking
Merriam-Webster
A woman having intellectual or literary interests. Etymology: Bluestocking society, 18th century literary clubs.
Wikipedia
The Bluestocking society was an informal women’s social and educational movement that came into being in England in the mid-eighteenth century in imitation of a similar - though more formal - movement in France.
Additional info
Many romance novel heroines are bluestockings. Other members of society may look down on them for this decidedly unfashionable trait, but not the hero. 
