Steph is introduced as a new student at Hollyoaks High, with early storylines focusing on her school life and best friend Zara Morgan (Kelly Greenwood). She frequently bullies fellow pupil Lisa Hunter (Gemma Atkinson), driving her to attempt suicide. When Steph's friends react disapprovingly, she apologises and promises to change. She cultivates a promiscuous reputation, having brief relationships with Brian and footballer Scott Anderson (Daniel Hyde). Steph eventually becomes friends with Lisa, but accidentally ruins her hair while attempting to dye it. Believing that she did so on purpose, her other friends shun her. Distracted by the quarrel, Steph does not notice that she is being stalked by serial killer Toby Mills (Henry Luxemburg). He attacks her, hitting her in the head with a spanner and leaving her to die. Steph is comatose for a week, and is diagnosed with epilepsy when she regains consciousness. Upon learning that Toby is Lisa's brother-in-law, Steph resumes her bullying. Johnno eventually catches her physically attacking Lisa, and orders her to leave her alone. The two go on to attend university together, where Steph apologises for her cruelty and they are able to reconcile.