An Assassin Named Glimmer

The world has become over populated, there wasn't enough room for everyone. That's why the Assassin games were made. Every kid right before the turn three get sent to the Assassin games with a card saying what there name was, what gender they were, and when their birthday was. A strange girls card had their name smudged, the only letter they could make out was G. When this girl doesn't fit in with the other leagues, she decides to make her own. With permission from the council, a new group was made. How will this girl survive through the Assassin Games and how does she leave a mark?