I feel terribly depressed . mil is worst?

i have put my life story many times. in short mamas boy. passive aggressive ,always interfering mil. i recently told my husband i ll leave his house. once i decided this i had started feeling better. when i told this he got really sad, was almost in tears. i could not see his agony, i love him sooo much. he promised me he ll make changes in the house to make envirinment good. but my mil has already started playing mind games with him. she has started saying things like oh i dont want anything? i ll only sit in one corner . u do whatever u want to. . all this nonsense will again make my husband emotionally weak and then again he ll be the same mama boy. at present i m with my parents. have to go back, but feel terrible and helpless, i know when i ll go again emotional drama ll start. i feel helpless. in this situation how i take care of my baby i dont know.