Horn,
i get the 'tit-for-tat' sentiment, but acting on it is not useful. to you, or her, or the kid.
the comparing of what she is doing today to what you did or didn't do in your drunkenness or how "bad" you ever were is ultimately not just distracting but destructive to whatever relationship you might have, now and moving forward.
any real-life folks, maybe sponsor, who can help with a more detached perspective?