Yes, the series set in the Rosato & Associates law firm are great. Her more recent standalone books are a little too formulaic urban-mom-in-danger for me. The OP asked for series, and I definitely recommend the Rosato series. Each member of the all-woman firm is featured in various books.
I suppose that Iselle and bertriz are crossdressers? There are more than enough strong female characters to balance out Cazaril.
Terry Pratchett’s YA Tiffany Aching series; Wee Free Men, Hat Full of Sky, Wintersmith & I Shall Wear Midnight.
Very easy to read, very funny. If you like them enough, you can move into the Discworld proper and read the other Witch books. Really though, all the books are very good (and there’s *heaps *of them) and as there’s usually a good straong female character lurking about somewhere if they’re not centre page.
Second this. Sabriel is awesome.
How about a vicous female anti-hero, set out on a noir-tinged soul-destroying quest for bloody vengence? If anyone wants that, I recommend Best Served Cold by Joe Abercrombie.
You can’t have all these upright, empowering heroines without a little antidote … 
Google “culinary mystery” and you’ll have series to read for the rest of your life and then some. I like Joanne Fluke, Cleo Coyle, Joanna Carl, Laura Childs, Ellen Crosby & Michelle Scott, for starters.
They aren’t the protagonist in The Curse of Chalion, however.
I also recommend Sabriel.
The main protagonist of Brandon Sanderson’s excellent Mistborn is a girl named Vin, who is also more towards the badass end of the spectrum. “I’m not a good person or a bad person. I’m just here to kill things.”
Yeah, you really can’t make a case for anyone other than Cazaril being the protagonist of Curse of Chalion; The whole story is from his point of view.
Cool. I’ll check that out.
I like badass protagonists!
I recommend anything by Barbara Michaels/Elizabeth Peters. They are mostly stand alone books, but there are one or two that feature the same character. They are easy reads, and there is usually an element of humor to them.
Starting in 1942 Helen MacInnes wrote a series of 20 plus novels with similar themes. They were generally spy stories often with a woman protagonist and usually some romantic escapade as well. She wrote until 1984 and was widely praised with many N.Y. Times best sellers among her works. They are not, however, a series.
Another contemporary author with woman protagonists is Susan Isaacs who has written 12 novels, counting her first which is “Compromising Positions” which was made into a move. They are not a series but they usually involve a housewife or career woman thrown into an unusual criminal situation or voluntarily thrusting herself inot one. She is extremely funny and her stories are very good reads. Her books are also widely anticipated and best sellers.
Thomas Perry has the Jane Whitefield series. She is a native American who helps desperate people on the run create new identities and go underground. Fun thrillers, a little bit different.