When can you break a lease My girlfriend and I were attacked by her…

When can you break a lease
My girlfriend and I were attacked by her ex-boyfriend at her current resedence. He broke in and tried to hit me with a 2×4. He has a history of coming to her place, sometimes acting violently and hurting her. He was arrested this last time. If he is released, she wants to move so he doesn’t know where to find her. Is this a good enough reason for her to be released from a rental agreement?