The fact her story contains false information she could only have got from either the police or the relatives is in-itself proof the story is a lie.
IIRC there is a NOTW contract signed and dated by her pre-trial contradicting what she said in the witness box also.
It doesn't alter the body of her evidence, even if I accepted what you said is true, which I don't. As for the NOTW deal, I agree it was distasteful, but she was being hounded by Fleet Street and consequently made a deal with the highest bidder to get the pack off her back. It's unclear whether the deal was signed before or after the trial, but it was arranged through a solicitor, who, one would have thought, had given her legal advice on the matter.