I may misunderstand as English is not my first language but when I reread the account of the husband coming home, OP implies that he accused her right from the bat. Also she never swings the stick in his direction and rather breaks it and breakdown on the ground sobbing. But I understand how it might appear dangerous.

If my partner had such a meltdown, I'd be sure to contact at least the emergency services, and maybe involve the police as well if I fear for my safety.