
On Christmas Day 2008, Sean finds out he isn't Amy's father. Soon after Amy's birth, Jack asked Roxy for a paternity test, aware Amy may be his daughter Roxy initially decided to raise Amy with her friend Christian Clarke, after Sean missed Amy's birth but changed her mind when she and Sean reconciled. Amy is named after her deceased cousin, now known as Danielle Jones, the abandoned daughter of Ronnie. On 13 November 2008, when Roxy goes into premature labour, Archie pretends to call Sean but doesn't so he misses the birth.

They move in together upon their return and later marry.

Roxy is adamant she will live with Archie, but Sean persuades her to return to Walford, telling her he loves her. It transpires Roxy is staying with their father Archie Mitchell in Weymouth, to Ronnie's horror. They leave, but Ronnie soon returns looking for Roxy, revealing that after they argued in Ibiza, she disappeared.

Roxy later discovers she is pregnant and tells Sean that he is the father, while she and Ronnie plan to return to Ibiza. This causes Amy to be conceived however, Roxy still believes that she is Sean's child, not Jack's, even though there is a high chance she could be Jack's. After arguing with Ronnie, Roxy gets extraordinarily drunk and has sex with Jack Branning, who is Ronnie's partner. Amy's mother Roxy Mitchell starts dating Sean Slater, but Roxy's sister Ronnie Mitchell tries to break them up when she discovers Sean is a drug dealer as Roxy was once addicted to cocaine.
