(CNN) -- Monday morning, as we scrambled to get Luna off to school, there came a moment when the timeline of my life leapt into fast-forward. I was carrying around an iPad turned to CNN, checking in to see what news awaited me at work, while Luna danced around me, knowing my partner or I would turn off the TV if watching it slowed her down. Then, suddenly, something brought us to a halt. "President Barack Obama is speaking at Barnard College today," the news reader said. Our eyes widened, and we shot each other a smile. The president was speaking at Mama's school.
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Barack Obama spoke Monday at Barnard, Rose Arce's alma mater
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Arce recalls that when a dorm mate said she had two mothers, other students fell silent
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Her daughter, Luna, wants to follow in her mother's footsteps by attending Barnard
@placeholder was a long step better, but on the first day of college, my dorm mates fell into silence when one young woman delivered this news: "I have two mothers," she said.