(CNN) -- Serving a 26-year prison sentence for the murder of her roommate, American Amanda Knox said Sunday she is scared, but determined to prove she is innocent, according to an Italian lawmaker who visited her cell. Knox, 22, seemed very pleased by the visit, which included members of the Italy USA Foundation, said Catia Polidori, a member of the foundation and a member of the Italian Parliament. Knox is also grateful for the foundation's interest in her case, Polidori said. "In my opinion, in spite of the imprisonment, she seemed to be serene," Polidori told CNN. While Knox is aware of the seriousness of her situation, Polidori said, she is "resolute" about proving her innocence.
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Delegation from Italy USA Foundation visited Amanda Knox in Italian prison
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Knox seemed "serene," denies guilt in roommate's murder, one visitor says
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Delegation took her English-language books as Christmas gift
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Knox's father has said he believes she'll be freed on appeal
But he said the @placeholder appeals process is more flexible than in the American courts, noting the appeals court could open the case for a further evaluation of evidence and new information.