Carla arrived to visit her estranged sister, Shortland Street Head of Nursing
Ellen (
Robyn Malcolm), and soon got a job at the hospital as a newbie nurse. Whilst carrying out a blind-folded team bonding exercise, Carla intentionally fell down a large cliff and the two sisters finally reconciled when Ellen nursed her back to health. But Carla's true nature soon became apparent when she implied to her co-workers that Ellen had pushed her. Carla instantly clashed with fellow nurse
Tiffany Pratt (Alison James) due to jealousy of her beauty, relationships, and career, falling out with her partner
Chris Warner (
Michael Galvin). She began to blackmail Tiffany when she discovered her
Hepatitis C diagnosis and spiked Ellen's dinner with marijuana so she failed her mandatory drug test. Carla briefly assumed the title of 'Head of Nursing' before she was dramatically exposed, further deepening her hatred of Tiffany. Ellen was shocked when Carla began to date her ex-boyfriend
Bernie Leach (
Timothy Bartlett) and the two soon eloped in what appeared to already be an unhappy marriage. Still jealous of Tiffany, Carla spiked her drink leading to her walking in front of a truck. Many of their colleagues realised what had happened and turned against Carla. In an act of revenge, she sabotaged a surgery on Tiffany and nearly killed her, framing surgeon
Johnny Marinovich (Stelios Yiakmis). Bernie and Carla's relationship continued to grow toxic due to his alcoholism and her manipulative manner. To ensure he would not leave her, Carla faked a pregnancy and subsequently a miscarriage after a minor car-crash whilst teaching her niece
Minnie (
Katrina Devine) to drive. When Bernie discovered Carla was unable to have children since her teenage years and thus had been lying, he angrily assaulted her and was arrested; Carla went to stay with her mother. (
Timothy Bartlett) to death on the 1000th episode in 1996, becoming
Shortland Street's first on-screen murder. The hospital soon saw the return of Carla and she instantly caused trouble by manipulating an abusive parent to drive drunk, causing him to crash into the hospital and kill Nurse
Carmen Roberts (
Theresa Healey). Carla began a relationship with former Paramedic
Sam Aleni (
Rene Naufahu) whom was on a downward spiral and turning to alcohol. When Bernie returned after being acquitted of assault, Carla promised she would divorce him and take all his money. The two were injured when an earthquake hit Ferndale and a bloodied Bernie insulted Carla, resulting in her battering him to death with a candlestick, framing the scene to look like a casualty from the quake. Not many were fooled by the act but Ellen stood by her sisters strong calls of innocence. Eventually Tiffany convinced Ellen of the truth after she unearthed evidence Carla had in fact committed the crime, and Carla confessed. She instantly grew scared of losing Sam and retracted her statement, resulting in the Police mistakenly believing Sam was the culprit and arresting him. Whilst in prison, Sam's grandfather died and an upset Carla admitted to her crime, leading to a bitter breakup. Carla returned home and slit her wrists. Devastated, Ellen had her sectioned in a local psychiatric unit and Sam was released as an innocent man. Ellen visited her sister in the unit but was physically accosted by her and blamed for her mental decline. After realising that the institution was not the best option for Carla, she was taken to live with their mother. At the start of the 1997 season, Ellen received a call their mother informing her that Carla had been sentence to
life imprisonment with a non-parole period of 10 years. 25 years later, Head of Nursing
Nicole Miller (Sally Martin) began to visit a therapist to help with ongoing anxiety issues and following strict advice to ostracise her mother
Leanne (
Jennifer Ludlam), her therapist was unveiled as an apparently rehabilitated Carla. After hypnotising Chris Warner into forgetting her past, Carla soon landed a job at the hospital as a counsellor and developed a strong bond with Nicole, manipulating her through her sessions into isolating herself from friends and family. Working with several other staff members, she manipulated them into breaking up their relationships, committing offensive behaviour at work, and isolating themselves, so she could hold onto her control of Nicole. Nicole's wife
Maeve (Jess Sayer) soon became fearful of Carla and eventually caught her choking Nicole to try trigger a panic attack and asset her control. This led to Carla's dismissal from the hospital and Nicole finally breaking from her manipulation. In a fit of anger, Carla kidnapped Nicole's son
Kruse (Feleti Peter Aulika) and considered driving them both into the ocean. Nicole managed to track the two down and saved Pele, only for Carla to evade capture. Months later Nicole learned Carla had been captured and she was required to give evidence in court. In December Carla was admitted to the Emergency Department after having been in a fight in prison. She apologised to Nicole and warned her against new doctor
Vincent Hughes (Milo Cawthorne) who appeared to share history with her. However she managed to escape her hospital bed after hypnotising her prison guard and kidnapped Nicole by knifepoint. Threatening her life, she managed to convince Maeve that Vincent had known her at a former hospital job and had abused her physically. Releasing Nicole and apologising for the horror she had put her through, Carla was imprisoned with additional charges. ==Character development==