27 years ago - Tora Olafsdotter is born among a hidden tribe of magic-wielding Norsemen.
8 years ago - 19-year-old Tora chooses to leave her tribe & see the world. She uses her ice magic to help people, becoming Norway's resident hero & taking the name Icemaiden.
7 years ago - 20-year-old Tora joins the Justice League during it's first major recruiting drive. She meets Beatrice De Costa & changes her name to Ice.
5 years ago - 22-year-old Tora & Beatrice leave the Justice League after the attack by Doomsday. They accept an invitation to join the Global Guardians.
Ice is a very sweet character, the second half of a pretty easy to understand twosome. She's naive, but she's also brave, kind, and pure-hearted. Obviously, she had to die. Comics clearly don't have much use for a character that isn't either overly sexualized or dark and cynical.
I happen to believe that she brings a pleasant energy to the stories she's a part of, and that she and Fire make a excellent pairing. The fact that they can be best friends even with their wildly different demeanors says something very uplifting about people in general and women in particular. Because of this, I've deliberately removed her death from continuity, instead having her join the Global Guardians alongside Bea.