In the Big Apple, nothing falls far from the family tree.

For most, college is an exhilarating opportunity for young adults to gain life experiences and expand their sphere of knowledge for the first time. The first time Columbia University students Lizzie Valverde and Katie Olson met, however, they gained so much more than that.
A long-lost sibling.

While the college years are meant to prepare students for the future, Valverde and Olson found themselves contemplating the past after the first day of their creative writing class. In the ABC news interview below, 34-year-old Olson describes how 35-year-old Valverde's answers to the "generic" introduction questions students often answer in class piqued her curiosity.

According to a New York Times article on the two students, Valverde had only registered for the class minutes before it began back in January 2013, and while sitting directly across from Olson, Valverde proceeded to explain how she had been adopted as a small child and, among other facts, had a self-proclaimed "goofy obsession with the Olsen twins."

“It fit together with lot of stuff that I knew,” Olson told the New York Times in reference to information she had learned while researching her family history and her biological mother. Olson knew her biological mother had another daughter who was attending school at Columbia, but contact efforts had thus far fallen short. That was until now.

The ABC video explains that after class, Olson began asking Valverde a flurry of questions, leading Valverde to believe that Olson might know the whereabouts of her long-lost younger sister. "I don't know your sister," Olson recalls telling Valverde, "I think I am your sister."

Upon hearing this revelation, Valverde says she "just froze." The interview below reveals that both girls were adopted by different families -- Valverde living in New Jersey, and Olson growing up in Florida and Iowa. Valverde's upcoming graduation would prove to be yet another opportunity for their family tree to grow, however, because Olson would finally get a chance to meet her biological mother, Leslie Parker, in person.

"They're both amazing, beautiful women," Parker tells ABC, "I am looking forward to seeing both of them."

When asked how the two girls' serendipitous reunion made her feel, Parker told New York Times, "I’m glad I chose to have them and gave them the chance at life," concluding with, “I’m not religious, I’m spiritual, but if you don’t believe in a higher power, you would, when you heard their story."