Reason for mediation would only be financial. A's cost way too much. I do not know if that can even be avoided at all as my W is still in her fog phase I am very aware of the timeline. Unfortunately, I am experiencing some issues that could require a relocation, job opportunity with equity and the ability to gt myself and my children back to a better quality of life for our futures. Whether W wants to be a part or not, she is on her own timeline.
Would it be possible for you to continue with your relocation and settling the kids in while your W still makes up her mind about the D? Let her worry about it, I am in my own DB infancy stage but putting your life on hold for this to finalize need not happen. Carry on with your plans, but plan just for yourself and the kids, she should be on her own. It should be that you and the kids are going on life's jolly ride and she can stay back and decide if she wants to catch up or drop out. As and when she decides, she can set up mediation and everything else without you having to do any of it. Sometimes I wish my H was so unsure, it would at least give me some time. He is now like a speeding train crushing everyone in his way to the D station.