Scott, turn the mediation sessions into a chance to show how great you are doing. Stay upbeat and positive. It sounds like from your earlier update that you have a pretty good mediator. Go in and be the best version of yourself. If you go in defeated and anxious, she will sense that and use it to her advantage. Stay upbeat, fulfilled, give off an air of happy and fulfilled.
I would suggest sitting apart from her at the kid's sporting events. Doesn't have to be obvious. Get there early and get a seat. More than likely she'll choose to sit apart. Or get their just on time, and grab the first spot you can find. If you go in looking for her, stop doing that. Pretend like she isn't even there. You are there for you kids, not for her.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018