Oh! I still have a little bit of time in #Internationalwomensday, don't I? Some of the *great* sf/f writers are/were women.
I just spoke in another thread of CJ Cherryh's extraordinary skill at exposition in fiction.
But there are plenty more.
Andre Norton lit my youth, and is probably the oldest exemplar I know of.
Zilpha Keatley Snyder was there, too, with delightful tween-level fantasy, especially _Black and Blue Magic_.