The accused was stopped by police for erratic driving. She was noticeably upset and impaired although the officer smelled no alcohol. Evidence was led at trial that the woman was a highly nervous person who was taking a prescription. Her doctor had told her not to take more than two pills a day. However, the label on the bottle read: "Take one or two tablets as needed." The accused had had a bad day and felt she "needed" more pills. She had taken six that day. Impaired driving? Explain making reference to mens rea and actus reus