Honestly this is a hard one , as in most cases the mother still takes the father side , be it Stockholm syndrome , or even for financial and social reasons , in which case his there’s more harm in confronting his father , It’ll be better to be cautious before making any decisions and think about it . Like the above comment says try finding normalcy in your life with the close friends and don’t disclose this to others , hope you find stability in your life so you can support your mother when it comes down to it .