A couple things I have learned through this journey we call life.
You cannot help someone through, not going through with suicide. I watched my twin brother travel that road and go through with it. He had the support, but didn't choose the road we would have all thought. He left two sons behind.
Those kids went through hell( A long story) but I was just with them for Thanksgiving. As of right now they are doing really well and are young adults at this point in life.
Secondly, I don't believe in mistakes(over protecting) your daughters. You are doing the best you can and from what I see a good job.
My daughter now 17(EXW left when she was 11) will say to people often, I wouldn't be where I am today if it wasn't for my father. Looking back I lead with actions and not words. If I said I would do something I did it. It made an impression on her.
Life, you do your best. You be the best rock you can be. Sure your rock may get a little dirty, a little chipped, but guess what it's still a rock.
My kids grew up more quickly because of the divorce. They saw life wasn't always this picture perfect story that unfolds.
Keep "livin the answers" for yourself as they arise.