The Lost Female Alpha

Diana is the only daughter of a powerful alpha family forced to grow up on the run. Nobody can know about her past incase the people who killed her family are still after her.
When she finally finds a pack to take her in things start to look up for Diana. She is able to hide he past while having an almost normal life until she reaches her eighteenth birthday and meets her mate.
Can she protect her new pack or will she have to reject her mate and go back on the run?