is this the first time she apologized, that your hopes are so high that it means a change? If not, it’s a cycle that tends to repeat itself, with many abusive or controlling people. The apology, regret, calm time, then the build up to explosion again. even if this is a change point and she is now determined to change, no change happens overnight. It’s a lot of work and takes time, and it will include slip-ups, a step backwards every once in a while or even 1 for every 2 forward. It’d still be advisable and important to have support and guidance for while going through that time.
It’s definitely hard to take that first step and speak to someone. It’s scary, there’s the fear and chance it can backfire, the relationship won’t be good and you’ll need to find someon you can relate to better, that you’ll want or need a second person involved. It IS a big, scary step. But it’s also an important one, and one that can bring you so much help and good and support. Put your fears into Hashem’s hands, tell Him you are trying to do your part and you know only He can control the outcome, and pray for it to work out in the best way. And then take a deep breath and let go of the branch, trust Hashem will catch you. Because He will. Be determined to make your life and your family’s life better and go for it.