Clearly, she has not lied under oath. It is the prosecution that lied in misleading the witness on material facts, in which she is assisting. In these new times we might say she has conspired to commit perjury in High Court.
Prosecution can't commit perjury - only witnesses and interpreters can, given the statutory basis for perjury which is preferred to any common law perjury.
She might've committed misconduct in public office.
