She appears in episode 8 of the first series of EastEnders spin-off EastEnders: E20 , credited only as Mrs Olubunmi and played by Jay Byrd. New executive producer Bryan Kirkwood introduced the character to EastEnders in his first episode on 4 June , this time played by Ellen Thomas. When the character arrives in EastEnders, she urges Mercy to tell Fatboy that they are moving to Lagos. She hosts a lunch at the community centre and tells Lucas Johnson Don Gilet that she has grown fond of London but is going to Lagos for Mercy's sake.
Fatboy then realises that neither Grace nor Mercy want to go and makes them realise this after Mercy has returned the key to their former home. Fatboy then says he has a plan for somewhere for them to live, and they move into a property on Albert Square. Grace attends a bible class with Mercy, held by Lucas. She apologises for Mercy's behaviour when she continues to ask about false prophets and a passage that states that anyone who questions a priest should be put to death, causing Lucas to leave.
Grace makes Mercy write Lucas a letter of apology, but Mercy bins it. Upset with the amount of litter around the streets, she urges Mercy and Fatboy to volunteer to pick it up. The next month Leon breaks one of her commemorative plates and Fatboy tries to create a new one in the hope Grace will think it is real, but she does not fall for it. However, she praises Fatboy for his eventual honesty and displays the plate with her others.
However, when she discovers Mercy has been serving drinks in Alfie Moon 's Shane Richie illegal den, she berates her granddaughter and says Fatboy has corrupted her. Grace overhears Dot Branning June Brown planning to collect jumble for her church. Grace collects the jumble instead, leaving Dot upset. They quote bible passages to each other to try to show who is in the right, but Grace later admits that she is lonely and just wanted to meet new people. The next day, Mercy tries to get Grace and Dot to make up, by suggesting Grace work in the launderette.
Grace puts some shirts in a broken washing machine, which annoys Dot, and after Grace gets it open Dot is still not happy. Grace later gives Dot her CV to give to her boss, and Dot says there is not a job for her but Grace tells her that Jesus disagrees.
The next day, Grace asks Dot if she has looked at her CV yet. Dot says Grace is overqualified as she used to be a teacher. Grace says she will not be teaching again as she was dismissed from her last job. Later, Dot finds a tin of cakes in the launderette with a note from Grace saying it was not about the job. Dot visits Grace and offers her a few weeks work while Dot is away.
Grace feels honoured, and tells Dot she was dismissed for slapping a pupil. Dot thanks her for her honesty. However, when Dot joins a local choir that Grace is a member of, the pair start quarrelling again, as Dot is unimpressed with the singing standard of the group.
She later holidays in her native Nigeria but returns in time for the wedding of Prince William and Kate Middleton. She does not watch the wedding, however, as Mercy is leaving because she faces deportation. Grace and Mercy say goodbye to each other but as Mercy's taxi drives off, Fatboy stops it and asks Mercy to marry him.
Grace is opposed to the idea at first, until she realises that Fatboy loves Mercy. After Mercy and Fatboy's wedding, Grace attends Mercy's hearing and is annoyed that they will not get a decision over whether she can stay in the country straight away.
Mercy is allowed to stay in the UK but decides to leave anyway over guilt at her deception. Grace waves Mercy off as she leaves in the back of a black cab. Two days later Grace worries when Fatboy does not come home, and finds he stayed with Dot. Fatboy later tells Grace that he will be living with Dot as Grace's house holds too many memories of Mercy. Faith later holds a party at Grace's house and she has sex with Fatboy but they are caught by Grace. The next day, when Faith returns home drunk, Grace slaps her and kicks her out of the house.
Following this, Grace makes appearances in EastEnders: E20, where Faith continues to ask her for a place to stay, but Grace refuses. When Faith returns home drunk, Grace slaps her telling her to leave. Although Grace is not seen on-screen after this, she still lives locally and is mentioned on occasion. Grace is not mentioned since. Mercy and Grace's introduction to EastEnders made them the first Nigerian family to appear in the series.
Mojekwu, who plays Mercy, was surprised at how long it took the programme to represent her community in the series, but congratulated them for doing so. It was announced in April that Lucker was to depart from the series and would have an "explosive" departure. Concurrent to their romance, which was extended to span Lucker's increased tenure, Vanessa separates from her controlling husband Harry, and reveals that he is not the father of her teenage daughter Jodie.
Lucker describes Vanessa as a glamorous risk-taker, who does not fit into the soap's Albert Square setting. She received critical praise for her comic timing in the role, and was nominated Most Popular Newcomer at the Inside Soap Awards.
She departed on 6 October The character was announced on 10 May  and first appeared on screen on 7 June  when she arrived in the show's setting of Albert Square in Walford looking for her mother. She is a love interest for Darren Miller Charlie G.
Hawkins and is described as big-hearted with "an infectious smile and a personality to match. She brings yet more fresh energy to the show—she's a ray of sunshine.