WR, For your gross income, use what you had on your 2012 taxes. That should be enough info for that question. You don't need to pay an accountant for that little bit of information...tax data is sufficient enough.
I know you aren't ready to deal with this data collection, but it has to be done and soon. I know you aren't ready for a divorce, but your h is pushing you hard on this and I would rather see you ahead of the game than behind.
Your son and your sister are now aware of the situation and I do hope that they were understanding today. Your son saw the handwriting on the wall, I don't blame him for not wanting to live w/his father.
Please take a huge breathe and know that you are going to be okay no matter what.
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.