Well just what does she want you to communicate? What is it that she feels she isn't being told about the kids? Or......is it more about her need to talk? I'm guessing it is her.
Don't get me wrong. I am not saying you should not communicate. I just feel the real issue here is about her controlling. She is using the kids as her hook.
She may be more irritated at you b/c of S15 losing his virginity. When she thinks you aren't available for her to vent, then she gets angry.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!