Cinders, You learned your lessons well. Boundaries are all about you and what you feel comfortable with. If you do not feel comfortable being "friends" w/the ow, then don't. It's okay to say hello, etc., but nothing says you have to be best pals. I think you are handling your situation quite well.
When we come here, none of us know what the future holds; and yet, as we move forward, life changes for each of us in ways that we never imagined. We all thought that our spouses would be w/us till do us part, but look at all of us.....we are evolving into people who are rediscovering what life is all about. Yes, my friend, you have gotten stronger, more content and confident. Life is about what you want and if someone tags along, that is fine too, but the most important thing to remember....it's all about you and you live your life.
I'm very happy to read that the children are doing well. You should be very proud of them and that should include you as well.
Cinder, you have done very well. Please come back to visit again. You are a success story in your own right. Hugs to you and your family!
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.