When Liz came back alone, they should let Liz in to capture her and use her as a slave or ransomed her back to Andre or just held has as a prisoner for stealing from them earlier.
The annoying psychologist lady keeps talking about things that are obvious such as someone who'd never break the law would do so in a crisis situations. ALL the protagonists in both series are so law abiding except the rare theft.
Interesting point but you have to bear in mind, even if it isn't always apparent, the producers of this show are never far off behind the camera. As others have pointed out, this is a heavily scripted show. Doing such a thing would likely go outside of the bounds of the show's focus; I imagine there's certain safeguards to ensure the actors / stunt people they use for supporting character survivors are not allowed to be attacked or threatened.
That's my sense of it anyways. I wish the participants would do an interview so we can get a better sense of what went on behind the scenes.
Sure, there are safe guards. However, nobody needs to be hurt. They could let her in and then once she is inside, lock the door and she'd be severely outnumbered - she'd just drop her one knife.
One thing both seasons noticeably lacked was a reunion episode like they have on Survivor and discuss.