That's really two questions, isn't it?
Why still alive? Because not all the evidence is accounted for, and there may be a dead man switch.
Why is she still in jail? Both to protect her and to pressure her to give up said evidence.
It's a question of trust on both sides. TPTB need to believe Maxwell won't talk or leak evidence on certain people. I don't know how anyone could guarantee that while she lives.
Maxwell needs to believe she won't be immediately killed after all evidence is secured or destroyed. I don't know how anyone could guarantee that, either.
I have seen no evidence that they are pressure her for anything. They don't want it out if she has a dead-man switch they will offer her a sweet deal to keep it that way.
FBI "cleaner" Maguire, a member of an FBI Child Exploitation and Human Trafficking Task Force, testified Monday that her team found the safe in a dressing room on the building's fifth floor. The mansion had forty rooms and took about 12 hours for her team to fully search.
Asked by a prosecutor at the trial whether the safe was open, Maguire answered: "We brought a saw." Prosecutors showed jurors and members of the public a photo of the safe, dragged by FBI agents to the middle of the dressing room. The hard drives Maguire said were found inside were piled on top of it. It also held jewelry, diamonds, CDs, and multiple passports, Maguire testified.
Maguire said that the scope of the search warrant didn't permit the agents to seize the hard drives and CDs, so she left them atop the safe.
When she got a broader warrant and returned to retrieve them, they were gone...
Imagine that...