Not Just A Luna; I Am Alpha‪!‬

I, Alpha Xander Finch of the Red Moon Pack,” he said. Wait, is he going to accept my rejection now? “Reject your rejection, Alpha Chastity Reid of the Silver Moon Pack,” he added, and my eyes widened when I felt something extraordinary. Maybe he felt it too because he was surprised as well. Then he carried me before he pinned me at the back of the now already closed door and kissed me and, oh goddess, I felt like I missed him for a thousand years already, so I kissed him back.
Chassy, an omega who carries the weight of her heritage, is mistreated by her mother and the Red Moon Pack for her entire existence. Her real potential, which was acquired from a father who came from a mysterious lycan clan, is hidden from her and her tormentors. She found out that Xander, her Alpha, was her mate. For some reason, he hurt her. As a result, Chassy leaves and rejects him.
But destiny has more in store for her. With the advent of her lycan beast, she unexpectedly rises to the position of alpha in her adopted pack. Then she met her father whom she never knew and found out more about herself.
The persistent vampires, push packs to band together under an alliance. Chassy's previous and present lives intersect when Xander stops by her new pack for a joint training session against this backdrop of peril and unity. Will Xander and Chassy be able to cross the gap between them? Can they stand together in the face of the impending vampire threat?
What will Chassy do when she knows that she's unable to give Xander an heir and a boy with his mother comes to the pack claiming Xander to be the father?