I just went to link and read that post with questions. Is that even a real post?
You have had your dog for 3 yrs, supposed testing done, and she asks questions like that? you kidding??
A little late in the game to ask now ! What did she do about the other heats the dog went through and keeping them apart? I think this sound like a kid who is trying to stir things up. If it is a real post, it's very upsetting that she would wait years planning to breed this whole time, and not have the basic knowledge of how dogs breed and when they are fertile, and how to keep them apart !