The appellate court hearing the new case could declare her in contempt of court but that carries no additional penalties.

NPR: Italian Court Orders New Trial For Amanda Knox

In that case, Italian law cannot compel Knox to return to Italy, although a court could declare her in contempt of court, which carries no additional penalties.

NPR: Knox Awaits Verdict From Italy's Highest Court

An individual who fails to pay the penalty is not subject to criminal or additional civil penalties.

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