I feel certain you are correct. She must be able to substantially bolster the prosecution's theory and Geragos has to break down her trustworthiness.
Poor Amber. No matter what dumb choices she may have made in her life, she didn't deserve this. Neither did her child, who is undoubtedly affected by the sudden change in their lives.
They can't even read down thread far enough to grasp the truth of the story; that it is not an accepted offer, as yet. You can just read the wishful thinking in their voices that they may have discovered even more reasons to trash Amber Frey.
Does anybody really wonder why scum like Geragos do what they do to witnesses for the prosecution? Sheeeeesh !!!!!!!