Bea,
I would forward the missive on to your lawyers, but I would also prepare a missive and send to your xh lawyers advising them to send all correspondence, etc. to your lawyers and provide the names and addresses for them.

What have you decided to do about his claim?


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.