Chari! as far as my concern, if she apply for medical leave , she can re join the class yet , as Hankhora says it is not easy if she is out of status for more than 5 months. try to find some Dr. or Psychologist who could write a letter than "due to her illness, she is unable to attend the class." My sister did same thing so somehow I know. Please consider, its not easy as it seems but she should not give up.