I think that is one of the hardest things, I know someone who went through this, not the physical, but the emotional and verbal. However, if you think about it, even those abuses are physical...how are your eating habits, can you sleep? How have you changed over the years in appearance?
She finally did get out, because when she was ready, there were those, who decided to do the right thing, that had heard all of it, and stood with her in court.
Please, document what you can, even if you have to hide what you document elsewhere. I will stand with you, and lift you up, as you make your way through this.