The first mention of Krekow is as Josie in this article on a Columbia website.
Note that Krekow used to work for BWOG, a student publication of Columbia.
She’s described as a member of Barnard College’s Class of 2013 and as a part of the Alpha Delta Phi Society.
She is most likely one of these four girls: Sylvia Krekow, BC ’13, Jessica Madris BC ’13, Jess Sims, BC ’13, and Molly Speacht, BC ’13. (Speacht shared the Jezebel story on her Facebook page and said that she knew who it was but that it was not her.)
In Krekow’s Jezebel article she describes herself as tall and athletic, a trait that isn’t present in any of the other girls. (Krekow was a rower.)
Krekow also describes wanting to be a writer, again a trait unique to her. Even though Columbia initially found Paul Nungesser responsible Krekow withdrew her complaint when he appealed.
“Natalie” was supposedly a long term girlfriend for Paul Nungesser but we have yet to ID her.