Amanda Knox hasn't slept much since her release, according to her dad

Amanda Knox breaks in tears after hearing the verdict that overturns her conviction and acquits her of murdering her British roommate Meredith Kercher, at the Perugia court, central Italy, Monday, Oct. 3, 2011. Italian appeals court threw out Amanda Knox's murder conviction Monday and ordered the young American freed after nearly four years in prison for the death of her British roommate Knox collapsed in tears after the verdict overturning her 2009 conviction was read out. Her co-defendant, Italian Raffaele Sollecito, also was cleared of killing 21-year-old Meredith Kercher in 2007. (AP Photo/Pier Paolo Cito)
Amanda Knox
AP Photo/Ted S. Warren

(CBS/AP) SEATTLE - Amanda Knox hasn't slept much since arriving home in the United States after four years in an Italian prison, her father said on Thursday.

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"I think she's literally running on adrenalin right now, because she hasn't slept very much - hardly at all. I think she's so joyful to be around her family and kind of reconnect with everybody," Curt Knox told KOMO Radio.

The 24-year-old and her family left Italy immediately after an appeals court this week threw out her conviction in the slaying of her British roommate Meredith Kercher in Perugia, where both were studying.

She was overwhelmed by her release from prison and the large number of reporters who awaited her arrival at the Seattle airport on Tuesday. The family has not yet decided on whether to seek counseling for her.

"It is going to take some time before we figure out what that new normal will be," Curt Knox said.

Amanda Knox occasionally slips back into speaking Italian, he told "Good Morning America" earlier Thursday.

"It is going to take some time before we figure out what that new normal will be," Curt Knox said.

One of the things Amanda Knox said she would do when she got out of prison was to lay in the grass.

"She has and it's been very nice to watch her do it," he said. "It's the little things that she hasn't had a chance to do in the last four years that really make it worthwhile and really kind of get her reconnected again."

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