Hi,
Looking at the birth-charts, it looks like both of them have anger/temper issues and are very aggressive, argumentative and fighting by nature. But then, I’m inclined to think they can bear with each other (anybody else in their place would have long called it quits) and the chances of a legal separation are limited. The last couple of years have been hard on them…with your father being in the midst of Ashtama-Shani or Saturn/Shani-dev’s transit across natal placement of Moon/Chandra. But thing should have hopefully eased up and will continue to get better.
Take care…