A Multiverse Story

Light had always thought she was only a monster/human Hybrid NOT an ancient Race, lost to a war that had broke out eons ago. But when her older adoptive disappears, she goes out into the multiverse in search of him since she always knew about the vast Multiverse she lives in. She Befriends a bunch of people like Nightmare, Dust, Wild, Abyss, Kin, Beats, V!, Swap, and even Cross. But then the X-Event started and Ink betrays her trust by siding with X!Gaster, after helping Dream save Cross, she realizes that there is something far worst happening to her home. A man by the name of Aster Opscurum appears in the multiverse with his forces to concur it, but the only person that is in his way is Light herself so he sends his forces to Kill her.
Will she be able to survive these attacks?
What is she Really?
Is she going to be able to keep her friends, her home, away from danger, and Save the multiverse?