Amanda Knox verdict expected Monday

Amanda Knox's attorneys are giving their final arguments in her Italian murder appeal case Thursday, and the presiding judge says a verdict is expected by Monday.

CBS News correspondent Charlie D'Agata reports Thursday's closing arguments should mark the end of Knox's ordeal, which has seen her convicted of murdering her English roommate, sentenced to 26 years in prison, and then challenge the conviction which her lawyers claim was reached using highly flawed DNA evidence.

Pictures: Amanda Knox appeal
Amanda Knox trial nears end in Perugia

Knox's defense team has one day of closing arguments to prove to jurors she was wrongly convicted of the murder of Meredith Kercher in 2007. She's been in an Italian prison for four years.

"I never imagined seeing my own sister in prison and it's hard for me because Amanda is innocent," Delaney Knox, Amanda's sister, tells "The Early Show". "She is not the type of person to do this."

Amanda's father Curt Knox says the period ahead may be the most difficult yet.

"All of the defense, all of the arguments, all of the testimony that has been provided to all of the DNA experts, that's all one thing, but to have your daughter have to plead for her life, it's tough," he tells CBS News in an emotional interview.

He says Amanda hasn't been eating or sleeping well. She's looks pale and more frail than before.

Curt Knox says he and Amanda have made a list of 10 things they'll do together if she walks free. He would only share one of them.

"She hasn't stepped on grass for four years... Just laying in the grass. That's all she wants to do. Pretty simple."

British journalist Nick Pisa, who has followed the Knox case since the beginning, tells "The Early Show" that Knox's lawyer has been more eloquent and more decisive than he was during her first trial.