In the 90s Elizabeth Hand co-wrote the DC title Anima with Paul Witcover for DC.
Sarah Byam wrote the 1991 Black Canary mini and most of the 1993 Black Canary series.
Jo Duffy wrote the opening issues of the 1993 Catwoman series. Devin Grayson had a run on the title in the late 90s. Bronwyn Carlton had a run on it in the early oughts.
In the early 90s Barbara Kesel wrote a DC/TSR fantasy series called Spelljammer. In the oughts she wrote Meridian for Crossgen, a fantasy series with a superpowered heroine.
Jill Thompson drew the 1993 Black Orchid mini, but the mini was written by Dick Foreman.
Cindy Groff wrote the 1994 Metropolis S.C.U. mini
Don't limit yourself by a strict adherance to both criteria.
Comics by Women for Everyone:
Wandering Star by Teri S. Wood: I don't know if it's ever been collected, but this Star Warsy sci-fi proves comics aren;t for just boys.
Vogelein by Jane Irwin: Will appeal to girls and woman alike.
Miss Fury by Tarpe Mills: 1940s Sunday newspaper strip; see discussion elsewhere in this forum.
Comics by Men for Anyone (but which appeal to Women): Anything by Terry Moore. Strangers in Paradise is good but long; but Echo is equally good, but shorter and possibly therefore more accessable; Rachel Rising is only just getting started (onlytwo issues so far, as of last Wednesday).
Elaine Lee wrote a 1994 series for Vertigo called Vamps which was apparently about female vampires.
Anything by Colleen Doran, I'd say, but in particular, I'd look at her A Distant Soil comics.
Wandering Star has been collected, but I don't think recently, and I'm not sure about completely, either. I have at least one really flimsy, ill-bound trade paperback of it somewhere.
Rachel Hartmann's wonderful mini-comic, Amy Unbounded, is a delight. There was one trade made of it, and it's definitely worth seeking out.
(But none of those are superheroes, I now realize.)
Here's a roundup of opinions about the portrayal of certain female characters (i.e. Starfire, Catwoman) in the DC reboot. The most sensible comment is from Image's publisher, who says that if certain comics offend you, "Starve them. ... STOP SUPPORTING THEM." In other words, find something else to spend your money on.
...2B technical , IIRC Fite scripted to a Roy Thomas plot .
The later issues ? The never-published 5th (which I've seen an art repro from) ?????