Kick-@ss Girl Characters in YA

In April, The Atlantic ran a story called "The Greatest Girl Characters in YA Literature." Katniss headlined (of course). And the Atlantic listed several other solid girl characters, BUT the list seemed dated and more MG than YA (IMHO).  For instance, Atlantic picked Pippi Longstockings and Ramona Quimby--both of whom are 8-9 years old.

Our genre--YA science fiction / fantasy in general, dystopia in particular--is chocked full of strong teen girl characters like Katniss. Off the top of my head, I can think of Tris (Divergent), Tally (Uglies), and Katsa (Graceling). I could go on, but I thought I'd leave that up to you all.

What are some of your favorite YA girl characters? (You don't have to stick to genre fiction, if you don't wanna.) Why?