I understand where you are coming from because you don't know who will walk thru that door this time. It could be the MLCer who is detached again or it could be the MLCer would wants to catch up and be friendly. Unfortunately, thinking about it will not help you. I suggest that you do something nice for yourself today, maybe a nice drive or spend time in your flower garden.
As for the divorce coming up, I think you are more than ready to lay it all out for your h and that will surprise him, i.e., especially when you tell him that the cutting of the ties will also involve the business. I agree, it would be best to separate it all because it would be in your face day in and day out if you continued working for the business.
You are so right, when your D and S need you, they will contact you. There's no point, at this time, to contact them. They both have a lot on their plates and they need to work on those things a bit for themselves. They know you are there and will support them any way that you can.
For today, turn the focus on to you. Try to enjoy your day and definitely find something that will make you smile. You've been carrying a heavy load for quite some time and you do need a break and today is that day for a break.
Hang in there!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.