OK, now I'm all caught up SadHub. Sorry to hear that you're stuck in the dang circus tent. (Though I did have to laugh at the image of it - you still have a good sense of humor!)
Like I said above, grab ahold of something solid and hang on for dear life. Go to your lovely D5's school program and enjoy every blessed second of rest and peace that you can vacuum up while you are there. Bask in the happiness you see in the children.
Is there any way that you can carve out a block of time that would give you a complete break from your W for a couple days? Maybe arrange schedules so that you could have a solid block without any contact at all with her? You really do need and deserve a few days without all the drama. Can you set a boundary wherein you pick up D5 in a situation where D5 is safe and your W is not present, like at school or something? Can you and the girls go away for a couple days together, say go camping or on a mini-break?
Plainly the D is stalled out for a bit while she gripes and stalls and avoids talking to her L. Nothing you do will hasten the process, so try to set it aside for a bit and just focus on getting yourself some physical distance and time away.
H: 44, Me: 45 Married: 20 y Together: 25 y no kids Walk away: 12/15 Asked for temp separation 12/25/15 PA confirmed 3/16 (apparently neither the first, nor the last PA he has had) H filed for D 5/16