You have an incredibly complex matter here that depends upon a lot of facts you did not mention. The best advice is to look for a Real Estate attorney with appellate experience to assist you through what could be a very long process.
Best of luck!
In addition to what Attorney Robbins said, you can find the subpoena form for Massachusetts at http://www.masslegalhelp.org/uploads/Bk/Xw/BkXwAH0wAlfm6C_8EV3TaA/subpoena-blank-form2.pdf
From there fill it in and request the financial documents you need. If you need assistance look for a local Family law attorney who offers Limited Assistance Representation to assist with filling out the subpoena and if there are complex financial matters you would be well advised to find a family law...
If your judgment for divorce stated you were to receive the pension then it would be your right. This should be filed against his Probate estate and I would strongly recommend finding an experienced lawyer to help you with that is a fairly complex matter. There may be some cause of action against his attorney as well but that should be discussed in private with an experienced attorney in these matters.
Best of luck!
It should revert back to you, unfortunately DOR can sometimes take a little bit to catch up. Call DOR to speak to them directly about this. Worst case scenario you may have to a file a complaint for modification in which you seek a change in child support (or in this case reverting back to the old order).
The one thing that catches my attention though is that it appears from what you've said the support order has been the same for 5 years. It seems doubtful to me that the payor's income...
It would seem to me that the money is for support of the children and not necessarily your personal property. That said if debt you are discharging was for the benefit of the children then I could see some portion being used towards that. If you did your bankruptcy pro se consult with a bankruptcy attorney immediately to best protect your (or your children's) assets.
From the sounds of it, at the very least the car insurance that is in your name. As for her seeing an attorney and from the tone of your posting I'd expect divorce or custody proceedings to be imminent.
You could file a motion with the Court to get the dog back. I see you're in Northampton which means you probably have Judge Wilson or Judge Fidnick, I've seen Judge Wilson handle this type of case before. I have an office in Holyoke and offer free consultations if you wish to discuss this matter further I can be reached at 413-522-6263.