The character's introduction and early storylines were intertwined with the return of villain Finn Kelly (Rob Mills), who manipulates and uses her to gain revenge on those he feels have wronged him, including Elly and Susan.

Bea and Elly's relationship remains strained in the aftermath, which allows their mother Liz Conway (Debra Lawrance), whom Anderson branded selfish, to play them off against one another.

The pair develop a strong friendship, however, before they can act on their growing feelings, Bea becomes the centre of a love triangle as she begins dating guest character Nathan Packard (Jackson Gallagher).

Digital Spy's Conor McMullan observed that Bea's arrival had "really livened up the lives of the Kennedy-Conways", while Sarah Ellis of Inside Soap thought Anderson had done well making the change from singing to acting.

On 5 May 2018, it was announced that singer Bonnie Anderson had joined the main cast of Neighbours as Beatrix "Bea" Nilsson, the estranged half-sister of Elly Conway (Jodi Anasta).

[3] Of her casting, Anderson stated "I do pinch myself, this is an amazing job to have, even though I started filming in February, it still feels surreal being on set, seeing how it all happens and being a part of it.

Megan Davies of Digital Spy said the sisters have "a tempestuous history", and Elly worries that Bea will turn her life upside down, especially as she has "a dark past".

"[8] Johnathon Hughes from the Radio Times speculated that introducing Lars to an "already-fractured family" could bring even more drama for Bea, whose relationship with her mother Liz Conway (Debra Lawrance) was so bad that she had to leave home and live on the streets.

[8] Producers decided to incorporate Anderson's singing career into the show, starting with Bea performing at a local Christmas carol concert in December 2018.

[15] Anderson felt sorry for her character, telling Ellis (Inside Soap) that Bea loves "Patrick" more than anything and she only came to Erinsborough because he persuaded her to be part of her family's lives again.

[6] Finn uses Bea to get revenge on those that he feels has wronged him, including Susan, Elly and Xanthe Canning (Lilly Van der Meer).

[16] On the day of a neighbourhood scavenger hunt, Finn takes advantage of Bea's similarity to Elly and convinces her to wear the same dress as her sister, while making sure she is spotted on CCTV.

[16] Claire Crick of Soaplife reported that Finn persuades Bea to leave town with him after telling her that Elly does not want to attend their wedding.

[21] As Finn traps them on a cliff edge and grabs hold of Bea, Mills likened him to a child in a candy store, as he confronts the four most important people in his life.

"[9] Producers established a romantic relationship between Bea and Ned Willis (Ben Hall), which begins when they form a bond in the wake of Finn's disappearance.

[19] Anderson explained to Johnathon Hughes of the Radio Times that before Ned's declaration, Bea misunderstands his close connection with Yashvi and is "struck" by how her jealousy at seeing them playing football together makes her feel.

She also teased that there was still a lot of their story to play out, including their team up to expose Cassius Grady (Joe Davidson), who has given them reason to becomes suspicious about his intentions towards Ned's sister Piper Willis (Mavournee Hazel).

So a break would be sensible..."[25] Timblick suggested that if Bea was single, it would give Finn a chance to "make a move", which Anderson said would be a "crazy" thing to happen.

[27] As part of the show's 35th anniversary week, Finn's memories return shortly before he and a group of friends take a trip to a private island for Elly's birthday.

'"[28] Finn leads Bea into the bush and pushes her into a mine shaft, leaving her badly injured, before telling the rest of the group that she has returned to the mainland.

"[30] Anderson believed that Bea decides to forgive her sister's betrayal because the only way to deal with Elly's murder charges is with a united family.

"[34] Speaking with Digital Spy's Daniel Kilkelly, Anderson explained that Nathan shows Bea how confident he is and how he feels about her, which is all she wanted from Levi.

[40] Earlier scenes show Roxy Willis picking the mushrooms for a dish that Kyle Canning (Chris Milligan) is entering into a food competition, unaware that they are toxic.

The judge, who only has a small bite of the dish, soon falls seriously ill.[41] Ned later gives Bea one of Kyle's kangaroo pies, which contains a gravy made with the mushrooms.

[42] Morris told Inside Soap's Alice Penwill that his character initially believes Bea has a stomach issue, but the "gravity of the situation changes pretty quickly".

It was really good to have that structure and now after 3½ years on that show I have decided it is time for me to continue challenging myself and create space to focus on my music and songwriting and more acting.

[48] Bea shares "heartfelt farewells" with Karl, Susan, Ned, and Yashvi before she and Sheila drive out of the street, while she leaves Levi "an emotional letter".

[48] A year later, Joe Anderton of Digital Spy reported that Anderson had agreed to reprise her role for the show's finale, following the news that Neighbours had been cancelled.

"[27] During the 35th anniversary episodes, Daniel Kilkelly commented "Poor Bea has learned the hard way that dating a supervillain with amnesia on Ramsay Street was never going to end well.

"[39] Hughes later summed up Bea and Levi's "short-lived relationship", saying "his cousin poisoned her with some dodgy pies, he accidentally got her fired from her job, she broadcast her doubts about their future on a podcast for everyone to hear... No wonder she's decided to call it a day and leave Ramsay Street for good.