Did, two quick things. Why don't you care about the texts of the little things she is doing? That is what married couples do! I love when my W texts me about random little things. It means she is thinking about me. And you shouldn't be texting about important things! (I am assuming that by important things you mean R things.) Talk as little about the R outside of MC as possible!! Embrace fun texting! That's how connection is rebuilt. Look up talk and touch charges.
Also, #1 boundary you did to establish, as a rule for piecing and R is No Contact with OM. I'm sorry but as long as she is still in contact with OM then you are not piecing or in reconciling. She should be willing to send him a no contact text or phonecall, in your presence. And then block him in all forms.
Hang in there and keep your chin up.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018