portrait of a young woman, c. 1856-1900. Possibly an after-death portrait? Photography was a new thing with the Victorian era. So taking photos of the dead, as a memento of them, became quite a thing. And the more times I look at this, the more I think that neutral, confidant air and posture is the result of the girl being a corpse.
Compare this Postmortem to all of the falsely labeled girls sitting in chairs. She is propped ip and her hands are placed over the flowers, keeping them in place, but not "holding" them. And she looks, well, dead. (Or at best, asleep)