My parents don't blame me for the abuse because they flat-out deny that any abuse occurred in the first place. The few times I have tried to tactfully tell my mom about something that felt traumatizing to me as a child, she has turned the tables on me and, yes, blamed me for what happened.

As an example:

Me: Remember when you used to take business trips? I remember it was so hard for me. I didn't want you to go.

Mom: Well, when I was home, you never showed any interest in spending time with me or talking to me anyway, so I figured it didn't matter.