Christine (The Big Bang)

 was one of the Psychiatrists that had a young Amelia Pond as one of her clients. When Christine came to visit Amelia and her Aunt Sharon (The Big Bang) she saw one of Amelia's paintings of the night sky with the Moon and 'stars'. At this time, stars were only a mythical thing, and Christine told Ameila that strs do not exist. Later on, Christine and Aunt Sharon are heard discussing Star Cults, for which Aunt Sharon hopes Ameila wont join when she's older.