After AW was cancelled, the character crossed over to the CBS daytime soap opera As the World Turns for guest appearances between 2000 and 2003.
When she was very young, Elizabeth died and Reginald faked his death, leaving her to be raised by her "older siblings."
Marley got the shock of her life when a girl named Vicky Carson, who looked exactly like her, blew into town.
Vicky had come to town with her boyfriend, Jake McKinnon, and Foster mother Bridget Connell, to take her half of Marley's trust fund.
Jake got close to his cousin Ben's girlfriend Marley in order to film her so Vicky could study the videos and impersonate her twin.
Marley was diagnosed with leukemia and needed a bone marrow transplant, so Vicky donated hers to her ailing sister.
After Marley’s recovery, the twins developed a strong bond, though there was always some tension beneath the surface.
Vicky became pregnant and claimed the baby belonged to Jamie Frame (Laurence Lau).
Jake and Marley formed a united front and decided to fight for full custody of Steven.
When a DNA test proved Jamie was in fact Steven's father, Marley and Jake were devastated.
Unbeknownst to Marley, Jake had slept with Donna months earlier and was cheating on her with Paulina Cantrell.
Though he promised he wouldn't, Cass made Marley confess on the stand that Jake had raped her.
The whole courtroom was stunned and it caused Donna to confess to the murder, though she too was innocent (Paulina was the perpetrator).
In her fake confession, Donna admitted she had slept with Jake and Marley turned her back on her mother.
Jake continued to run interference in her relationship with Jamie, but they managed to survive his sabotage.
Dennis Wheeler, Jamie's best friend and step-nephew, returned to town and an attraction grew between him and Marley.
The strain of her infertility issues, not to mention her closeness with Dennis, ended her relationship with Jamie.