KEEGAN: The Opposite of Loneliness | Cross Campus | Yale Daily News
Marina's words: "When the check is paid and you stay at the table. When it’s four a.m. and no one goes to bed. That night with the guitar. That night we can’t remember. "That time we did, we went, we saw, we laughed, we felt. The hats."
If you DID NOT credit Marina with your sentence, then what you wrote is NOT allusion, but PLAGIARISM!
If you use that sentence without properly crediting Marina, you might as well throw your application away in the trash can!
Yale Admissions Directors are very familiar with "The Opposite of Loneliness" because it was distributed at graduation in May, as well as published in the Yale Daily News, the New York Times and The New Yorker Magazine.
So, I think it best if you just deleted the sentence altogether!
BTW: Some schools scan essays through software that is meant to weed out plagiarism -- intentional or not. I'm not sure if Yale does this, but I know Harvard does.