Happy Rebirth day. Now you can conduct your life as you deem fit and rear the offspring properly... for the most part...while undoing her evil programming of them... Hell, Just have some ice cream and be happy.
Leave the baggage at the throne of God. At the very least always be civil toward her, friendly if possible. NEVER bad mouth her in front of the children, she IS their mother. Be happy, enjoy the boys, if I remember correctly, and move on.