So you, your 14 yr old sister and your mom all, jointly, figured out that she should get a divorce. You are way too up in your mom and dad's business. Stick to managing your own life. Leave mom and dad to figure out their own stuff.

Your mom's a controller, and you're becoming a little chip off the old block - trying to manage what isn't yours to manage. A marriage is between two people, not three or four.

Years ago, my sister called me up saying she wanted a divorce and didn't I think that was a good idea? I told her that I would never, ever criticize her decision, but that only she, and she alone, could decide what was a good idea in regards to her marriage. That is my deeply held belief.