Family beef

My husband and mother in law argue like they're married, sometimes he's wrong sometimes she's wrong the real problem is they're just alike the same brain in different bodies but they're fights are intense and sometimes I want to get involved but I feel it isn't my place they fight all the time and get over it rather quickly usually but sometimes I want to tell them your mother and son stop the fuckery for once but I don't want to overstep my boundaries so what should I do meditate or go to sleep through the storm?