my mom was quite psychotic most my up-bring, but there was never anything extremely drastic that happened besides financial instability, so why was there so much un called for excessive stress all the time?

she dominated my dad mentally, she was the man of the house.
when a woman successfully achieves dominance over her mate, thats also the last thing she wants. from a primal perspective if you think about it, dominance over the male of the couple validates her physical security at high risk if a threat which cannot be repelled comes into play, as there is no-one strong enough to establish stability.

and the void created by these insecurities is patched up temporarily from milking their offspring for various forms of validation for their personality to survive, cannibalism isn't always physical bois