I think two things Scorp. First, is that she received your email two weeks ago and went straight to her lawyer. I didn't mention it to you because it would have done you no good but you did the same thing so really, she, like you, was just being diligent. Second, and this came after any lawyer action on her part, is that she's seen you stand up. Whether she responds positively or negatively in the future, who knows, but she's seen it and she appears to be making an effort to keep you in the loop and appreciate your efforts with the kids.
As you said, respond to the parts that have to be responded to and leave the rest to your lawyer.
Me: 31, W: 29 T: 4 M: 2 Kids: 3 (SS: 7, SD: 4, D: 3) Separated, still living together: Nov 2013 Separate bedrooms: Feb 2014 W working away; kids with me: Nov 2014