People have said they were intimidated by me but those people generally and quickly fell into the obvious categories of "Had A Confrontation Coming For Repeatedly Acting like a Jerk" or "Passive-Aggressive Irresponsible Conflict-Avoidant Who Wants to Hang Their Fear on Others".
People have backed down in intimidation from my ENTJ best friend, my ESTJ mother, my ENFP sister, my ISTJ half-sister, my ISFP friend. An angry woman has no type. The pissed-off look is universal. She also sounds like she's surrounded by people who can dish it but can't take it either, and THAT part isn't her fault.
Your wife needs to seek counseling and I mean that kindly.