We are all aware that there exists refuges for women who have been victims of male violence. Fewer of us know that there exists refuges for men who have suffered violence at the hand of females. Men are far less likely to come forward to ask for help, prevented by embarrassment, seeing it as a slur on their masculinity, an admission of weakness. No one meeting these men, either socially or in the work place would suspect. In public they appear to be a loving and together couple.
We know that Julie was possessed of a temper that on occasions got the better of her in public. From her WS we learn that she is a strong woman very much into the "ME" syndrome. Some women "get off" on danger. She showed herself capable of independent crimes when she committed fraud and sold drugs at college. We don't know for certain that Jeremy instigated the caravan park robbery and it occurs to me to wonder if he was dared to do it to prove himself to her. He would NEVER admit to being in thrall to her.