My opinion would be that if she is a nurse then she is very familiar with all the reactions to a seizure so from watching other people with seizures it can be effectively learned by a heath care professional. I don't know why someone would honestly want to lie about something like this but if she lies about other things then most likely if the doctors have been unable to link anything to seizure activity then she could very well be lying. Hypocondriacs are known for the mental disorder that they feel something is always medically wrong with them when there is no known medical reason for their illnesses they state they are having. There is mental help available for this condition so if you feel that this could be the case I would suggest your local mental help facility to inquuire about therapy for this condition. And hypnosis can also help with people that have this condition as well as they can suffer from panic attacks as well that come from feeling they are sick or that something is medically wrong with them all the time. Your friend knows her more than anyone else and should know if it is likely that this is something being faked or not, it is honestly hard to believe that someone in the health care field would want to lie about this unless they are a hypocondriac and want or need attention for some reason which mental help and couseling can help with the issue they are dealing with that makes them want this type of attention as well.