Anger issues aren't just with her. I've worked from a book called "Anger Busting 101" but the "shut up and walk away" tends to piss her off more...but it's also the only effective way I've found for myself to calm down and be rational rather than explode and be rash.
As for the pressure...I'm not going to make excuses, you're right, it's there.
“People are just as happy as they make up their minds to be.” Abraham Lincoln