They spend Bianca's last days together and although Bianca's thrill seeking is too much for Frank, they end up in Costa Rica.After leaving a note for Frank, Bianca commits suicide by walking naked into the ocean.
For instance, he begins a relationship with Sheila Jackson when he discovers that she gets maximum disability benefits for her agoraphobia.
Frank is the biological father of Sammi, Fiona, Lip, Debbie, Carl, and Liam, but not of Ian, who is the children's half-brother and cousin. Although Frank pontificates self-righteously about political and social issues, he spends most of his time developing schemes to cheat the system and take advantage of others in order to make money.
Fiona Gallagher (Emmy Rossum), age 26, is the eldest of the Gallagher children.
Because of her mother's absence and Frank's neglect, most of the responsibility for child-rearing falls on her shoulders which forces her out of high school in her junior year.
Prone to selflessness, she sometimes needs to be reminded to look out for her own happiness.
Even though Fiona wants everything under control, she enjoys a little bit of chaos once in a while.
In season 4, she begins dating her boss Mike but then has sex with Mike's addict brother Robbie. In the aftermath of the breakup, Liam ingests cocaine that Fiona got from Robbie (a birthday gift; she kept the coke but made Robbie leave) at her birthday party and is hospitalized.
Fiona is arrested for child neglect and drug possession.
She is released shortly afterwards though, due to overcrowding in the prison and gets a job at a diner.