It's a shame that you can't wait until November, a couple good ones are coming out then!
As far as good female authors:
Catherynne M Valente: she writes from middle grade to adult to plain - flipping - amazing.
N K Jeminsin is great. Fifth Season is a good one to get into.
Nnedi Okorafor is fantastic. I think Binti would be considered too short, but you can read Akata Witch, Who Fears Death or Lagoon.
Anne Leckie with Ancillary Justice is science fiction, but it is great.
Katherine Addison's The Goblin Emperor
Anything by Sofia Samatar, but I think Stranger in Olondria is considered the one to start with.
Ruthanna Emrys' Winter Tide
Ada Palmer's Seven Surrenders
That will do for now, since I'm sure someone else will mention Mary's Ghost Talkers.
Edit to add:
Ursula K Le Guin, Patricia McKillip and Octavia Butler are classic suggestions (along with Margeret Atwood).
Also, Everfair by Nisi Shawi.