S'okay Zombie Chick, I get confused about this too ^^ But seriously, after trying so many times and screwing the character so much, maybe DC should stop, keep SuperGirl out and try something new. I love SuperGirl, I really do, but seeing her so badly written to many times kinda hurts. Linda was my favorite, that tiny cape was so cute, but this SuperGirl is awesome too.
Comic books: the one true form of immortality, complete with constant loopholes --- "...So, she looks over to her husband, then sets it back down in her lap and says, 'Honey, this one's eating my popcorn.'"- Agent K ("Men in Black", 1997)
The Silverage Supergirl died due to DC not figuring out how to treat her well..
The second one, Matrix, Linda Danvers EarthAngel retired due to DC treating her shabbily by taking away her daughter, Ariella, so that they can screw her over and make her quit the mantle of Supergirl..
Yeah I knew the first one died in crisis on infinite earths. Didn't know how the matrix one died, but to me that wasn't really supergirl anyway. I liked the third one. Have you seen the reboot costume?