I would like to see more on that case and why this was allowed. Can a lawyer here shed more light on what happened and why she was imprisoned for this action?
I still contend that you *should* have the right not to talk to the cops but you should NOT have the right to DELIBERATELY mislead an investigation. The latter is dishonest and ACTIVELY disrupting legal operations.
You have a right not to speak when it might implicate you in a crime. The Fifth Amendment guarantee is powerful and real.
But if the matter is beyond the reach of a criminal prosecution, like say if you have been given a grant of immunity, then there is no threat of criminal prosecution. Under those circumstances, with very few exceptions (like attorney-client privilege, spousal privilege, doctor-patient privilege, priest-penitent privilege and a few along those very rigorous lines), since there is no threat of a criminal prosecution and your words cannot be used against you at a trial which cannot be undertaken, you lose the the 5th Amendment privilege. So, if you get a subpoena, you are obliged to answer lawful questions put to you.
NOW you are obliged to answer the questions put to you before a Court of law or before a Grand Jury (or even before Congress). And you are obliged to do so honestly on pain of criminal prosecution for perjury (if you lie) or contempt if you still refuse to answer.
The contempt is generally pretty interesting since the idea is to compel you to do your duty: i.e., answer the questions. Therefore, you essentially are given the keys to your own jail cell. Answer the questions and you get to go home.