A lawyer and the older sister of Carmella, Rosetta moves into No. 30
Ramsay Street along with Pepper Steiger, Frazer Yeats and Will Griggs. She had previously lived with her mother
Lucia (
Maria Mercedes), until she decided to cut herself loose, break up with her fiancé she was not in love with, and move to Erinsborough. Rosetta develops feelings for housemate Will, but did not act upon them out of fear of being rejected; meanwhile, fellow housemate Frazer had hidden feelings for her. Upon finding out Will only had eyes for sister Carmella, Rosetta's feelings for him disappeared. Rosetta has an affair with
Paul Robinson (
Stefan Dennis) which leads him to leave his new wife
Lyn Scully (
Janet Andrewartha) on the day of their wedding. The affair does not last, and Rosetta and Frazer begin dating. However, when Frazer confesses to Rosetta that he is really George Brown, the brother of her former fiancé, Johnny Brown, she leaves him and takes comfort with Paul. Upon learning that Paul had an affair with her best friend, Pepper, Rosetta lashes out at him, accusing him of mistreating her friend. Pepper, overwhelmed by Rosetta's act of friendship, spontaneously kisses her before Rosetta kisses her back, unaware that Frazer's brother
Ringo (
Sam Clark) is watching. Ringo spreads the word, and everyone briefly suspects Rosetta and Pepper are gay. Rosetta reunites with Frazer, who has required a wheelchair following an accident on a
race track. After they sort out their issues and learn more about each other, Rosetta and Frazer get engaged. Frazer surprises everyone by walking on the day of the wedding. After the wedding ceremony the mini bus that is taking residents back to the street crashes leaving many injured, including Carmella and Ringo. Rosetta's boss
Tim Collins (
Ben Anderson) puts a lot of pressure on her by giving her more opportunities, which conflicts with everyone's increasing expectation that she and Frazer will start a family. After Tim's pressure puts Toadie in hospital from a
panic attack, they decide to quit and start their own partnership, which becomes a success. Though Frazer wants children, they both realise that they are not ready, so they agree to wait. After seeing how difficult it was for Carmella during Chloe's birth, Rosetta is convinced that she will never be able to stand the emotional strain of having children. However, she finds out, much to her distress, that she is pregnant. Frazer tells her that if she cannot raise the baby, he will – as a sole parent. Rosetta promises to try to raise the baby because she wants to save their marriage. Rosetta starts to look forward to having the baby, especially after becoming Chloe's godmother. When Rosetta believes she has lost the baby, a doctor confirms that there was no baby in the first place. They go for another scan and the doctor finds a heartbeat. After this Rosetta and Frazer decide to go to Italy to visit her extended family. Rosetta gives birth to a son, who she and Frazer name Marco, and they settle down in Italy. ==Reception==