( CNN ) -- The wife of a Georgia man charged with murdering his toddler by leaving the child in a hot car for hours this summer has passed a polygraph test , her lawyer said Monday . So-called lie detector exams are not admissible in Georgia criminal court , and the test given to Leanna Harris was not court-sanctioned . She has not been charged in the case . But her attorney Lawrence Zimmerman said that a `` licensed veteran polygrapher and former law enforcement officer with decades of experience conducting polygraphs '' gave his client the test . He did not provide the full test questions and answers but gave reporters a select few questions and answers . The only questions Zimmerman provided : . â€¢ Prior to June 18 , did you know that your husband would leave your son in that vehicle ? â€¢ Did you plan or arrange with your husband to leave your son in that vehicle ? â€¢ Did your husband tell you that he was going to leave your son in that vehicle ? She answered no to those three questions , and the results showed that there was no deception in her answers , Zimmerman said . CNN asked Cobb County criminal lawyer Phil Holloway , who is not involved in the case , what he thinks of polygraphs as a means to gauge the truth . The tests are `` garbage '' and are used for `` public relations purposes , '' he said , to curry a more favorable opinion of a client with the public . Zimmerman said in August that Leanna Harris is `` concerned the district attorney 's office may try to level a charge against her . '' Police said Harris behaved strangely in the days before and moments after the death of her son . Georgia dad indicted on murder charges . One detective testified that she asked her husband , `` Did you say too much ? '' in a police interview room after he was arrested . The detective also said that when employees at her son 's day care told her that her son , Cooper , had not been dropped off as usual on the day he died , she responded , `` Ross ( her husband ) must have left him in the car . '' Authorities have said both parents searched on the Internet for how hot a car needed to be in order to kill a child . `` She is holding up as best as any human being can . She 's strong but she 's very scared . She has lost a child . She 's lost her husband , and she 's waiting to see how this whole thing plays out , but it 's very scary for her , '' Zimmerman said about his client . `` She believes it was an accident . There 's no doubt in her mind , '' he said . Leanna Harris said she was a grieving mother caught up in `` the storm around my family , '' according to a victim impact statement obtained last month . `` The rush to judgment by the public and the mainstream media has left me with little confidence in our legal system and our society , '' the letter read . Read more : Mother lists herself as victim . A grand jury has indicted Justin Ross Harris on eight counts , including malice murder and two counts of felony murder . His attorney says Ross Harris left his son in his vehicle by accident . Ross Harris is scheduled to appear in court this week . Leanna Harris has seemed from the start to stand by her husband , sitting through his probable cause hearing and praising him at their son 's funeral . She insisted at the service that she was `` absolutely not '' angry with her husband . `` Ross is and was and will be , if we have more children , a wonderful father , '' she told mourners . `` Ross is a wonderful daddy and leader for our household . Cooper meant the world to him . '' Read more : Hot car death highlights key role of digital evidence .
NEW : `` She 's strong but she 's very scared , '' attorney tells CNN . Polygraph results are not admissible in Georgia criminal court . A test given to Leanna Harris was not court-sanctioned . The defense says the polygrapher used a technique called ''lie - detection.'' -- ``I'm sorry for what happened