Donna Te'i told CNN earlier this week that she'd never talked to Te'o, nor did she have any involvement in the online plot involving the Notre Dame player and the woman he believed was his girlfriend.

CNN: Manti Te'o denies he was part of girlfriend hoax

Couric said she believes Te'o sincerely thought he was having a relationship with Kekua.

CNN: Te'o to Couric: My emotions were real

Donna Te'i acknowledged she was portrayed in the online images as Kekua's sister, but not of her own accord.

CNN: Manti Te'o denies he was part of girlfriend hoax

Couric said she believes Te'o sincerely thought he was having a real relationship with a woman named Lennay Kekua.

CNN: STORY HIGHLIGHTS

She was alive, didn't have leukemia and had never met Te'o.

CNN: STORY HIGHLIGHTS

According to Swarbrick, Te'o received a call from a woman claiming to be his girlfriend in December, telling him she was not dead.

CNN: STORY HIGHLIGHTS

Te'o said he was told Kekua was in a coma following an April 28 car accident, but she awoke the following month.

NPR: Te'o Tells ESPN: Not Involved In Creating Hoax

According to Swarbrick, Te'o received a call from a woman claiming to be his girlfriend on December 6, telling him she was not dead.

CNN: January 18, 2013 -- Updated 1628 GMT (0028 HKT)

According to Swarbrick, Te'o in early December received a call from a woman claiming to be his girlfriend and telling him she was not dead.

CNN: STORY HIGHLIGHTS