I'd start with debunking ALV, she's freshest in the jury's mind as the last witness for them. Any decent expert on domestic violence would be able to do that- particularly emphasising that they have great credentials, stayed impartial & didn't send books to JA. Show that JA is the abusive 1, TA is the real victim. Also bring up the fact that ALV said this was worst abuse she ever saw, ask what this expert's experience of the worst abuse they ever saw & compare. Damages ALV's credibility & makes her look silly.
I'd move on to debunking the witness before that- Samuels. Any decent psychologist would be able to do this. Emphasise that for someone with PTSD she sure did have enough wits about her to stage a cover up (& also replay that breezy phone call to TA after she knew he was dead).
Next up would be the Hughes' (either of them or both) to testify their real meaning in the letters about TA. The defence opened the door to their opinion, so walk right through & paint JA as the crazy stalker she was.
After that the computer expert I've heard about. Not sure what goodies he has, but definitely testify no




on TA's computer.
Walmart person to testify their policy in returned gas cans & how they have no record of any gas cans returned from that time. Not only does it show premeditation with the gas, but shows she's still lying now.
Detective Flores to testify how her new story makes no sense- a mock up of the shelves in TA's closet to prove she couldn't have climbed up them would be great too. Emphasise not TA's gun & how easily JA lied for years.
Coroner- prove that JA did not shoot 1st: not enough blood from the wound & the shell lying on top of blood.
I'm sure that Martinez has better stuff in store that I've mentioned, I think he'll do a great job wrapping it up.