Thundercats 2011 version story

What if Lion-O, Tygra, Panthro and Flicker weren't the only ones, who went to retrieve the Book of Omens from Soul Sever, what if there was a fifth person and if it was Lion-O's twin sister and she's from another world? Gabriela Melissa Delgado Rosa/Alina Rebecca Luna Star/Night Shadow, who had been a fan of the Thundercats when she was 15 years old, a fanfiction author and an actual author from our world, who had lost everything to her and also her family, after her friends left, she confronts with Soul Sever and they talked about their loses and a new relationship began to form between them. Soul Sever x OC

Note: This is after the episode of the same name and one thing, the character Soul Sever is voiced by Jeffrey Combs, who is the star of the Re-Animator movie franchise and this is my first Thundercats fanfiction story.