Cute Devil (1982)

While Ryoko is in Vienna studying music, her boyfriend dies in a traffic accident. Ryoko believes that she has psychic powers which killed him, and when she returns to Japan she is sent to a mental hospital. While recovering, her brother-in-law, Kouji, decides to look after her, and she goes to his house to act as a governess for Kouji's sister Keiko's daughter, Alice – who Ryoko becomes increasingly sure had something to do with her sister Fuyuko’s death.