I use to think my xh didn't remember because he was great at erasing memories, but I was shown 3 years ago and it continues today, his memory of what we once did together is still there and no matter what, those memories are there for always.
As for your xmil, let her be. She will contact you again.
Enjoy your day!
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.