Bella is one of Daniella's friends, as well as Alexander Goth's mother.
Initially, Bella becomes a pursuit of Gwen Lovcelace, who's enamored by her looks, money and hatred for her husband Mortimer Goth. She eventually starts an affair with Gwen and divorces Mortimer to marry Gwen instead. However, Gwen's plans are more greedy, as she actually starts to plan to kill her to get her fortune. In a twist of events, it turns out that Bella, in cahotts with Mortimer, were planning to kill Gwen instead, actually succeeding to poison her. They end up being killed by the BOOTY 4000, after Gwen comes back from the dead.
Bella Goth is first approached by Gwen Lovelace, who immedietly feels attracted to her, and since she knows of her great fortune and wealth, she decides to get the best of both worlds and possible hook her up. However, Bella starts acting suspicious, ever since the two first met, following Gwen around, appearing in the most absurd places, usually in Gwen's workplace or during patrols or investigations, with an apperent miserable expression. Quickly it become obvious that her marriage with Mortimer Goth is detereorating, and is no longer what it used to be, and she even confesses to Gwen that Mortimer isn't friendly towards anymore. Bella meets Gwen several times where the two just flirted, which was usually liked by Bella, but not always.
Finally, it was time for the two to get married, and also time for Halloween, so to make it special, the two married in a special spooky lot where the wedding was also an Halloween party and the guests came wearing costumes. Gwen and her exchange vows and are finally married, however, when she's talking with the guests, Gwen dies on the dance floor, as Bella cries. Later, when Gwen is brought back from the afterlife, it is revealed that it was Bella, along with Mortimer who she was still in cahoots with, poisoned her wedding cake slice and killed her, so Gwen has her revenge and kills the two using the DA BOOTY 2000, freezing them to death. It is revealed that the Goth's fortune was gained by having Bella marry wealthy people and then murdering them, inheriting their money, and was about to do the same with Gwen. Eventually, the lot where she died was bulldozed, along with her tombstone and body, so she was automatically sent to the Nether.
Bella's death has a great impact on Joshua Kufferman's girlfriend, Cassandra Goth, her daughter, so much that she was pretty much lead to insanity and gloominess. Bella is one of the reasons why she is even accepted into the Pixel Perfect crew, since Joshua feels pity for her, since her parents did die recently.