Venting for sure. In RL, I'm not so confident and don't have an outlet to speak freely like here. No way I'd get away with saying what I say here. Calling out her behaviour is always met with resistance, I only do so if it's particularly bad since it takes resolve to not escalate.
FWIW, I don't make digs at STBXW, I just managed to get away with one today where I felt the circumstance was safe to do so. And yeah, a bit cheeky. I think I'm too open with her. I discussed on email pre-mediation points, and I made the mistake to respond to her point about family time by saying I didn't want family time together. She vented a bit today about it. The mediator pointed out that might be the case now, but maybe not in the future. Privately with the mediator I said it's a boundary issue, and I need to move on without her interfering. I said it would be something like right to refusal. Sure keep the option open, but I'm not obliged to accept. I know my W, any control she can get, she will take. However I feel STBXW is really seeing the reality of separation.
Speaking like this is a way for me to stay positive. Have a look at my earlier posts, lots of uncertainty and worry about her. I'd Iike to think I've faked it to the point that I am actually in a better place. Wasn't the case a month ago, I couldn't sleep or eat.
Anyway, it's still going to be a long hard journey, it won't always go my way, or be easy.