(CNN) - Ben Linnabary still has a few more months to go at Colerain High School near Cincinnati, Ohio. His mom, though, didn't have that long to wait.
Jennifer Linnabary had been fighting an aggressive form of cancer since 2009. A few weeks ago, as her condition worsened, her friends, family and representatives from the school held a one-person graduation ceremony for Ben in the University of Cincinnati Medical Center intensive care unit. There was a red cap and gown for Ben, the traditional graduation music, applause when he received his diploma and a gentle toss of his mortarboard.
Less than 24 hours later, Jennifer Linnabary died, CNN affiliate WLWT reported.
"It was very surreal, just the fact that they could get all of these people together," Ben told WLWT. "It was very hard at the same time, being there with my mom and knowing that, you know, these might be the last hours I would spend with her."