I know writing those notes is therapeutic, but giving them is another matter. It's ok that you did, though.

Of course your mother would be mad. You said why in your own post: she knows she was supposed to take care of you. Your "accusation" (to her) of your dad means she didn't do her job.

At least now you've told them you aren't in denial, and have thrown the ball into her court.

Stay safe.