"I have been waiting since March 20th for your response on my last email on sharing time with our kids. Can you tell me your thoughts on that?"
She doesn't need reminding. Try this:
"I understand you would like to settle the house quickly. I feel that the kids are more important and I would like to agree on a parenting plan before we discuss other issues."
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