She and her younger sister Roxy Mitchell (played by Rita Simons) were introduced by executive producer Diederick Santer in July 2007.

Her first major storyline saw Ronnie clash with her villainous father, Archie (Larry Lamb), after it transpired that he forced his eldest daughter — at the age of 14 — to give up her newborn baby just moments after she gave birth.

Womack's second stint on the show saw Ronnie involved in storylines such as killing Carl White (Daniel Coonan) in self-defence, marrying Charlie Cotton (Declan Bennett) and having a child with him, having an affair with Vincent Hubbard (Richard Blackwood), attempting to poison Dean Wicks (Matt Di Angelo), being stalked by Andy Flynn (Jack Derges), and remarrying Jack before drowning along with Roxy in a hotel swimming pool.

A younger version of Ronnie, (played by Lucia De Wan), appeared in a flashback episode broadcast on 5 September 2022, which focuses on the Mitchell family in the 1970s.

[1] Having been running a bar in Ibiza, Ronnie Mitchell and her younger sister Roxy (Rita Simons) visit Walford to support their cousin Phil (Steve McFadden) on his wedding to his fiance Stella Crawford (Sophie Thompson).

It discloses that the sisters have also come to see their aunt Peggy Mitchell (Barbara Windsor) and stay to run The Queen Victoria while she is on holiday.

Stacey's late husband Bradley Branning (Charlie Clements) is posthumously assumed guilty of the murder after falling from the roof of the Queen Vic while trying to evade police arrest.

Unable to explain her actions, Ronnie agrees that she needs professional help and visits a counsellor but leaves before the session and lies to Jack about it.

Roxy then starts dating Carl and when Ronnie fails to pull her back together, she convinces Phil to sell The Queen Vic, the pub that Kat and Alfie lease from him, to force them out of Walford.

She learns that Sharon Rickman (Letitia Dean) and Shirley Carter (Linda Henry) know what happened to Carl and tells Roxy the truth, who accepts Ronnie's explanation of the incident.

Ronnie has a brief relationship with Charlie Cotton (Declan Bennett), the grandson of local gossip Dot Branning (June Brown), after confiding to him about her ordeal with Danielle's death.

They argue, and Ronnie smashes up the Albert bar, before she tells her relative Billy Mitchell (Perry Fenwick) she is going to kill Dean.

He warns Mick, and eventually Dean's parents Buster Briggs (Karl Howman) and Shirley, who arrive after Ronnie has given him a drink full of crushed up drugs.

However, on her wedding day, Roxy packs her things, as she reveals she is moving away to live with Glenda and Danny, feeling as if she will ruin Ronnie's happiness.

Ronnie jumps in to rescue her, but is entangled by her wedding dress and drowns alongside her sister just before midnight as Jack reads Cinderella to the children.

They were the first major signings made by executive producer Diederick Santer, who told the Daily Mirror that the sisters were intended to bring "sexy, dramatic excitement" to the show.

[16] A BBC source described Ronnie as the ice to Roxy's fire,[11] and Simons deemed her "armoured",[17] as well as the "less flamboyant, darker" sister, with a more controlling nature.

Treadwell-Collins initially intended for Ronnie to appear enigmatic, cool and guarded, hoping to intrigue viewers before introducing elements of her backstory to garner audience sympathy.

To the instrumental sound of "Little Green Bag" by George Baker, each sister discussed their sibling, giving snippets of information on their personality and the dynamics of their relationship.

Holmwood observed that the upbeat trailers contrasted EastEnders' reputation for depressing storylines, writing "Maybe the arrival of Roxy and Ronnie will herald a new golden age for the soap?

Series writer Simon Ashdown described her as "hurt and broken by her life", and hoping to charm Ronnie into liking her before revealing the truth.

[27] In the aftermath of her abortion, Danielle was depicted as being increasingly emotionally unstable and angry with Ronnie, believing that she deserved to belong to the Mitchell family.

She hurries to find her, but just as they are about to be reunited, Danielle is run down by local resident Janine Butcher (Charlie Brooks), and subsequently dies in Ronnie's arms.

Although different outcomes to the storyline were considered, Santer explained that Danielle dying best preserved Ronnie's status as EastEnders' "tragic heroine character".

"The storyline presented Ronnie with grief, disbelief and anger and the temporary breakdown of her relationship as well as her gradual coming to terms with her loss and the efforts to re-build her life following the tragedy.

It is Ofcom's view that the broadcaster did not intend the storyline to suggest that her actions were a typical response of a mother who had experienced SIDS and therefore sufficient editorial context was provided to viewers."

[36][37] It was reported by the Daily Star Sunday that Ronnie experiences a change of heart after visiting relatives in hospital and seeing the midwife who delivered her son.

Soap is based on controversy and sensationalism because bosses are trying to get high ratings and they can't write things like 'Ronnie had a cup of tea'.

[44] Marsh wrote in her magazine section: "Last week, EastEnders was cleared of wrongdoing by Ofcom, the media regulator, over its baby swap storyline, and I think that's the right decision.

[58] In 2020, Sara Wallis and Ian Hyland from The Daily Mirror placed Ronnie 26th on their ranked list of the Best EastEnders characters of all time, calling her an "Ice queen".