ALICE WON'T DIE

A peaceful world is suddenly invaded by grotesque monsters. A system similar to a game awakens to part of humanity, giving them the potential to defeat the monster threat.
Amidst those that have awakened, is a shy, timid girl. She somehow survives by following others, finding companions to trust amidst the new chaotic world.
But she is betrayed.
As she dies, her flesh being eaten by monsters, something inside her snaps. She decides to take matters into her own hands, to not simply follow others, but control her life herself.
It should have been too late.
However, the system that grants skills based on one's personality and desires, resonates with her dying thoughts.
A new skill awakens.
Alice goes back in time.
What will she do?