WR, One more thing, do not let on to your SIL that you have the papers. I'm now thinking she knew about them and was fishing to see if you would say anything else. Why cry over a certain food that you liked unless she knew something.
Sit quietly and listen to your lawyer.
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.