I, personally wouldn't have sent it. I would have continued to show her that I had moved on. Actions speak louder than words. There is no guarantee that she actually sat down and read what you sent because if it's more than a sentence or two, their attention span is that of a gnat.

Now, leave it alone and don't say another word about moving on. Let's hope that she sends you the check stubs for the mortgage. If she doesn't contact the mortgage company yourself and inquire as to how you can get copies.

Keep the focus on you! Just leave her alone unless it's necessary to contact her about paperwork, etc. Otherwise, she's out there on her own for now.

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.