My head is spinning with all that you are dealing with. I am so sorry that you are having to carry such a large load, i.e., the business. It's never easy when having to deal w/a person who just doesn't get it when it comes to business dealings, i.e., especially when it involved a MLCer.
I am praying that things will settle down for you. As peace pointed out, you have to take good care of yourself. Try to carve out a bit of time for yourself and just breathe! I am very concerned for you and your health.
Please, please take care of yourself as much as possible.
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.