I detect a power change happening in your situation. You've got her all flustered. Her angry behavior and snippy attitude CLEARLY show that you are still totally in her head. She's really angry about the past, you yourself have admitted she has reason to be angry. Just let her keep processing that anger. I think your text to her was perfect. Keep being the great guy you're being. Like I said before, your W might try being nice to you at some point, but realize it's a test. She has seen you consistently behaving differently, but that's with her gone and angry. She might try to test that consistency by changing her act a little bit. Maybe try being nice, or even purposefully bring up something she KNOWS really bugged you in the past, just to see that old you peak out and she can say to herself (or maybe even out loud to you) "See, there he is! I knew this was all a big show!"
Puppy said something profound in a post recently that struck me, and I think us LBS's should really take it to heart. He said something like
"We're told to believe nothing they say, and only half of what they do. If we don't believe they're thinking the same thing about us, we're fooling ourselves."
