Fixer, She's projecting on to you once again. You are not a bad dad. That comment is nothing more than a load of bs.
Someone give that woman a mirror so that she can take a good, long, hard look at herself!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.