No ... but you may have a case for malicious prosecution against your co-worker for calling the police when she knew that the protective order did not include your place of employment. Officers are used to people telling them that it is a false accusation, etc and it all being lies.
No. Police are protected by a legal nostion called qualified immunity--they are immune from being sued for any of the hundreds of discretionary decisions they have to make each day (decisions where the officer has to decide based on the facts at the moment, whether to arrest someone or not). Nothing in your post sounds indicates the officer acted outside the protections of qualifed immunity--or that a 'false arrest' took place.
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