I think one way for a woman to ensure that she can leave bad relationship is to be independent. I was raised that way and raised my daughter that way. Being self sufficient will make it possible to leave with nothing and leave TODAY if need to. Not even 30 days later. Today.
Most women I’ve met who stayed in bad relationships for many years did so because they simply couldn’t afford to be on their own. I understand it’s a choice but for me it’s a very scary choice even if your partner is the most wonderful (he could die or become incapacitated) but it’s even scarier if he is a jerk.
I encourage every woman to reach independence and if it’s too late to teach their daughters to be self sufficient. It will be much much easier to leave if have to or be ok if something happens to a man.