I can certainly understand why he was in a foul mood...if his mother had a talk w/him, he didn't appreciate it and may have thought you asked her to speak to him.
Sometimes it is best not to have others interfere in things such as this, especially when they are experiencing a crisis. They already are paranoid and think everyone is watching them and out to get them....I sure hope he doesn't throw this in your face every time he gets angry. These mlcers do not forget one thing in their lives, especially when they feel we have wronged them, no matter how small the mistake.
It's okay, you had to do what you needed to do about he health care forms. You certainly didn't go out there searching for him deliberately. I'm just sorry he was such a grouch.
All you can do is pray and ask God to help you and your family during this crisis. Ask God to find a way to point this woman in another direction and to leave your family in peace.
Please take care of yourself.
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.