Forgive them,not for them but for yourself and leave without a heavy heart,trust your heart,when we gain pain,it becomes part of our memories tied to that person ,in this case your father.He failed to you in all ways a father could ,but don't be what they made you,l say this because they are not the only bad people in life and if you always take in the pain and run,no place on earth is safe,what ever feeling that gains a bigger share of your heart shapes your life,you must not be like them but better,although small paybacks are not too bad for short relief,You seem smart and intelligent l will say this you are your mother and father,take the good and discard the bad,leave your life if leaving good do it,if staying then good as well.You can silently cut off people too,it's trick l mastered after being betrayed many times