On March 11, 2013, Harper announced that she had an incurable brain tumor. Doctors said that she had less than three months to live. Although the disease is incurable, her doctors said they were treating her with chemotherapy in an effort to slow its progress. On July 30, 2015, Harper was hospitalized in Maine after falling unconscious. Later on the 30th she was taken via medevac to a larger hospital for further treatment. She was later released.