I have posted all of this before but here I go again.
I think it is highly likely that the plot was discussed during the 18 minute phone conversation between CA and WA on the morning of the murder. I suspect that WA was freaking out because DM wanted to take the boys swimming that afternoon and she was worried that the murder might not have happened by then. I further suspect that CA assured her during that call that all would be taken care of well before then. Note, WA tells what I believe to be a "half-truth" when she testified that she did discuss the swimming issue with CA during that call. I think she omitted the part about why they discussed this.
Without yet having confirmation that the murder occurred, I believe WA continued to obsess over the idea that DM might have the boys with him later that afternoon while hitmen are still stalking him. I believe THAT is why WA made the impulsive and reckless decision to drive by Trescott. I believe she was hoping to get some type of confirmation that DM was dead, and that is exactly what she got on the drive, and that is exactly why (in my opinion) she took off like a bat out of hell without asking any questions.
Or just panicked because she was worried the hit was not going to go ahead like the previous attempt. Perhaps the hit was supposed to happen after DanM dropped the kids off around 8.30-9.00am? WA knew what his movements were, roughly. She probably knew he would drop the kids off at that time then return home, but she did not factor in that he would go to the gym and when he turned left to go the gym instead of right to go home, things went pear shaped.
This also ties in with the TV repair alibi. TV guy is booked in the exact time as the hit, WA is quickly cleared of any involvement. WA is probably frantically waiting for confirmation from CA. She needs to keep TV guy there as the hit has not happened yet. Eventually she phones CA as she is freaking out, he's trying to calm her down, saying the hit is about to happen any minute. By the time she goes past Trescott she is a complete wreck, not knowing what is going on.
I don't think she was that concerned about the boys. I think she was desperate as she know the court hearing was on Monday and she stood to lose a lot, her career as a lawyer for starters, plus a lot of money. Her whole life depended on this hit.
When I say I don't think she was concerned about the kids. I think as a mother she has some level of attachment with her boys, but I'm not going to call it love. They adored their father, as WA has admitted and she has also confirmed he was a great Dad. If she really loved those boys, she would not have killed their Dad, end of. I can't get inside her head, but I would imagine the level of connection and attachment she has for the boys is on a par with having a pet rabbit. It's cute, she gets to play with it, but if it died she would just get a new one.
This murder did not happened because WA wanted to move to Miami, this murder happened because:
1. WA thought she might lose her career as a lawyer and/or lose a significant amount of money
2. As a narcissistic family the Adelson's had a pathological need to win, they could not face losing in court
3. CA wanted to please mommy
4. DA was enraged she would have to have supervised visits with the boys
note - I don't think WA would have been disbarred, but perhaps she was concerned she would have been.