Rejected what of it?

Samantha Price was the omega of the moonlight shadow pack her parents were killed in a rogue attack at that time her parents were beta and beta female but after they were killed her brother immediately took the beta title her brother shunned her and ordered the rest if the pack too also she was bullied and resented by her pack and her brother blamed her for parents death because they were attacked while taking her to the pack doctor because she got cut while falling off the window what exactly keeps her going brought all this torture?- Her mate--she didn't know who he was but she would get giddy at the thought of finding someone who would love her forever and unconditionally.
What happens when he turns out to be the alphas son?
What happens when she runs off for about three years after being rejected and humiliated in front if her entire pack.