During her childhood, Yarvell watched the propaganda television series Captain Croag and the Highland Rangers, as did Davros. (AUDIO: Guilt) She loved her father but resented her mother for constantly favouring Davros over her, and was disgusted by her brother's interest in animal life. At the age of 18, she was a member of the Military Youth. but was frustrated at how long it was taking for her to become an officer. She befriended Major Brogan when he brought Nasgard home to their house on Drammankin Lake. When he comforted her as she grieved her father's death, he revealed his pacifist ("peace activist") beliefs to her. She was devastated when she was forced to help execute Brogan, believing him to be innocent, and was horrified at Davros' request to have Brogan's body for experimentatio