I think the fact the LE is still "looking" is a double edged sword.
On one hand, if BC gets charged and they HAD NOT kept looking, BC's attorney's would accuse them of not exhausting other leads and focusing their investigation solely on BC, ignoring that "someone else" could have killed her.
On the other hand, now that they are "still looking" and they arrest BC, the attorneys will ask "If you are so sure that it's Brad, why were you still looking for the killer as recently as the weekend of 7/26????"
It also goes to show me that NOTHING about this case will be a slam dunk and it concerns me about the strength of their case and real / physical evidence.
As far as the rebuttal affidavit, BC had no choice. I figure that NC was like a lot of us and that we share the kvetching about our husbands FAR MORE than we share the good stuff. ;-) She also appears to not have really gone without - despite claims from EVERYONE that she wasn't getting enough money to feed and care for the children - why don't ANY of the friends' affidavits say THEY GAVE HER MONEY? Supposedly SOMEONE was - if not them, who? Could she have been exaggerating? Making him appear worse than he was?
I am also not totally buying the fear and controlling issue. Having been in a BAD relationship where I just wanted OUT and he was verbally abusive - I DID NOT provoke him. Many items in that separation agreement were pokes at him - having a high powered attorney on your side is not something someone that is that "controlled" does - and SOMETHING would have been done if in fact she was that scared that she was sleeping in her kids room with the door locked. There are not allegations of physical abuse - so why that reaction? I think that this separation was going to get VERY ugly and Nancy wasn't the meek, mild and controlled person that everyone is making her out to be. She had way too much freedom to run, bring the kids around, spend many hours with friends, vacation with her family, vacation with another family (and another woman's husband) etc to play the controlled spouse here. Women being "controlled" don't get to have these kind of relationships - they are usually CUT OFF from anyone that could help them - because it's easier to keep them down that way.
ALL this being said - I think he is the most likely killer and will be arrested.