text: This character has a recurring dream in which she walks through a forest being followed by someone whom she cannot see.
full_question: This character has a recurring dream in which she walks through a forest being followed by someone whom she cannot see. This character loses three pennies after performing a somersault underwater, then also loses her dress to Tia. Incestuous overtones are presented when she lovingly remembers her last kiss with Cousin Sandi. This character requests the creation of an obeah love potion from Christophene. She has a brother named Richard whom she attacks with a knife when he visits and does not recognize her. That incident occurs while this character is kept in an attic under the watch of Grace Poole. For 10 points, name the protagonist of Jean Rhys's Wide Sargasso Sea, the first wife of Mr. Rochester who burns down Thornfield Hall in Jane Eyre.
first_sentence: This character has a recurring dream in which she walks through a forest being followed by someone whom she cannot see.
raw_answer: Bertha Mason [or Bertha Mason; or Antoinette Cosway; or Antoinette Cosway]