Isabella came to
Genoa City to distract Paul Williams as a favor to
Michael Baldwin (
Christian LeBlanc), who wanted to break up Paul and his wife,
Christine. Isabella approached Paul at his office with a case against her husband, which he took. Paul gave Isabella shelter, and the two were drawn to each other. Upon the ending of the case, Isabella's past as a call girl came out, but Paul forgave Isabella for lying, and they became even closer. Isabella was keen on leaving the city after the case was over, but both Michael and Paul had their reasons for keeping her in town. Isabella was surprised to learn that she was pregnant with Paul's child. Paul's marriage took another hit when Christine returned home to find him passionately kissing Isabella. However, Isabella didn't want Paul, and she decided to tell Michael that she was carrying his child after a night of passion that they had. Michael reluctantly agreed to pay for her expenses and went along with all of her demands, while Paul became closer to his ex-wife,
Lauren Fenmore (
Tracey E. Bregman). Paul found out that he was the father of Isabella's child and decided to raise his son with her. Both Michael and
Mary Williams (
Carolyn Conwell), Paul's mother, were not happy to learn the truth. Mary did her best to break up the couple, and Paul eventually realized that he couldn't be one happy family with Isabella and their baby. After giving birth to their son, Ricky Williams, Isabella was convinced that her life would get better. Isabella was suspicious of a woman named Kelly Simmons that tried to investigate her, without realizing it was Christine in disguise. Paul decided to go back to Isabella and was even ready to move away with her. Christine found out about Michael's plot with Isabella and told everything to Paul. The couple reunited, and an unhappy Isabella decided to have her revenge. She made it seem like Christine had murdered her and, at the same time, she was plotting her next move. While everyone thought she was dead, Isabella confronted Christine in a bathtub after drugging her. Isabella was about to kill Christine when Paul arrived to stop her in time. Christine and Paul reunited but were unaware that Isabella was still alive. Michael came just in time to save Christine's and Paul's lives and Isabella was committed to a psychiatric hospital in Los Angeles. Isabella's parents started raising Ricky and took him to see his mentally ill mother from time to time until she checked out completely from reality and started becoming violent. Ricky suffered from this experience and also felt abandoned by his father. When Ricky returned to Genoa City nine years later and grown up, Paul and Christine recalled all that Isabella had done. Paul then went to see Isabella following Ricky's tragic death, in which Paul shot him to stop him from killing
Eden Baldwin (
Jessica Heap). However, Isabella's face was not shown and she was only seen brushing her hair while humming from the back. ==Reception==