that it was not Sonya's intention to "plant herself in their lives", but it just happened. When she was asked how Callum does not remember Sonya, Morey explained that Sonya had fallen in with a bad crowd, was an alcohol and drugs addict and was suffering from post-natal depression. She chose to leave Callum with her grandmother, Hilda, so she could get herself cleaned up. Hilda then had everything related to Sonya removed from the family. Callum was around four or five when Sonya left and Morey believed that he had blocked out the bad memories of her. Morey commented that Sonya's relationship with Callum would have been "a love-hate one" because she was only 16 when she had him. He would have become like a younger brother to her rather than a son. Executive producer Susan Bower defended the storyline when asked why Sonya and Callum's history had been rewritten. She told an Inside Soap columnist that they worked with the character's established backgrounds and found reasons and motivations for Sonya to act the way she did. Bower admitted that the only discrepancy that could be pointed out was Callum's age. When Hilda dies, Sonya becomes concerned that her secret will be revealed when Callum attends the funeral. However, Callum chooses to say goodbye to his great-grandmother privately, much to Sonya's relief. Callum then explains that he wants to find his real mother and tell her that he hates her, which devastates Sonya. She tells her sister that she cannot tell him the truth now as she cannot handle him looking at her, knowing what she did. Callum steps up his investigation into the identity of his mother and is injured in an accident while looking for clues. At the hospital, he recalls a memory about his mother and realises that she is Sonya. Toadie then "angrily orders" Sonya to leave. Of the revelation, Morey said "For Toadie, it's a betrayal to both him and his son. He's angry, but his initial priority is to make Callum number one." Morey quipped that filming the scenes was "exhausting." The actress also explained that Toadie's reaction to finding out that Sonya is Callum's real mother was one of devastation, he has to question whether Sonya ever loved him or was only with him to get Callum. Morey told a writer for What's on TV that it had been "fun" to see