The use of exclamations in her messages seems to be a positive sign. My W didn't use any indicators of emotion in our communications and it was frustrating.
Hang in there - you are doing great, and there looks to be more positives in your communication from her than recently.
Hugs!
M: 50 W: 47 No kids together M: 10 T: 11 BD #1: 12/14 R #1: 7/15 BD #2: 1/18 D Filed: 6/18/18 D Final: 01/28/19 Currently still in-house