I agree, this is a difficult case for the Zahau family to win. Rebecca was likely murdered by family members at the home of a politically powerful billionaire. Her family, a group of hard working immigrants, are working class people without the financial means to fight the Shacknais. Within hours, the former county prosecutor was at the scene of the crime, having been retained by Jonah Shacknai to represent one of the suspects. IMO, former prosecutor Pfingst, a known expert at thwarting murder investigations, was on the case within minutes of RZ's murder.
SDSO did a commendable job of minimally investigating the case and using the suicide theory to close it as quickly as possible. Hundreds of questions weren't asked, suspect and witness interviews were not taken, evidence wasn't collected or properly analyzed. They even allowed Jonah to direct the investigation, telling them when to ignore evidence. Even today, personal property of the victim that could yield evidence, has not been returned to her family, though the case is officially closed. Evidence is scarce becsuse it wasn't collected.
But the timeline and circumstances leading up to RZ's murder are impossible to refute. The evidence of head trauma, multiple strangulation marks, numerous defensive wounds, etc are powerful evidence that she died a violent death at the hands of others.
IMO, the Shacknais will likely use their own expert witnesses at the trial. But hopefully the Zahau's attorneys will do the same.
Its a classic American murder case, IMO. Wealthy, powerful people getting away with killing someone by using their wealth to protect themselves. As much as we'd like to believe otherwise, justice in this country doesn't work the same for everyone.