You're Mine, Moon Wolf

Lola found her parents being attacked, while they protected a stranger they had accommodated. She tried so hard to save her parents but she could not as the door had been barred, beforehand.
As she watched her parents die, her life came tumbling down. The high and almighty daughter of the Beta became a wolfless and mateless Omega.
Her 18th birthday which was in a few days came but she could not shift.