Request for Book Recs!

Over the weekend, I got an email from Nina, asking for recs for books with protagonists like Brienne of Tarth. Specifically:

Prominent female characters who aren’t just great warriors but who really have to struggle for their place in a male-dominated world. Preferably characters who aren't children or teenagers but grown-up women.

wish I had some recs to share, because I'd love to have read more books with characters like Brienne. But I've been racking my brain for days, and I really can't think of anything that I've read. My best suggestion is The Dragon Keeper by Robin Hobb, which has a mutant hunter girl called Thymara who sets off to start a new community with a bunch of other outcasts and has to struggle against the guys' attempts to force her into the gender roles she was partly trying to escape. But she's neither a warrior nor a grown-up woman, so it's hardly a good match!

So... does anyone have any recommends to share? Any help would be greatly appreciated!