I can tell by your posts that yes, you are angry at your mother but as ZH pointed out, you're definitely doing it outta love for your little man. I can see the love & determination you have going on deep inside of you. Sometimes hate does spur us. Sometimes we need to hate somebody to keep us going. But I think you don't need it as much or anymore, like you used to 'cos it's being replaced w/ unconditional love for your little man.
I know from other posts you are doing better w/ this situation. You're handling it very well, setting & keeping your boundaries.
Big hugs to you & yours.
Love,
RM