Books about: Really introverted/solitary female protagonists

[Jade]

Not socially anxious, traumatized or having difficulties with socializing and relating to others, but girls and women who prefer spending time on their own, and their solitary life is at least partially by choice.


Looking for adult and YA fiction, perhaps middle grade as well.

[Rainbowheart]

The Woman in the Wall

[Erin]

The Blue Castle is kind of a romance but might fit the brief anyway.

[...cats?]

An Unnecessary Woman
Convenience Store Woman
Natural History
Kick the Latch
All Passion Spent
Amy Falls Down

[Rainbowheart]

Gaining Ground
What I Was (view spoiler)[Finn is revealed to be a girl. (hide spoiler)]