Clem was born as an oridnary girl in a financially comfortable family. She is reserved and speaks only when needed. With thats said, she dislikes people who are loud or talk too much. So she rather sits with someone quiter, like, Rabea , to whom she became very loyal after their many years of friendship.
In the last school years, after Rabea became the head of the pupil council, she told Clem about her plan of long dreamed peace. But she didn't know, that Rabea was hiding some vital information from her. One part of the plan was to aquire the power of the Duqua Flowers (which aren't common). Thats's how she got her healing abilities (More on the abilities in the writing section)