Leslie Silva tweeted a video of their brief reunion before she walked the stage.
Silva said that her father has been deported three times. He's now in Ciudad Jaurez, Mexico.
She crossed the border on June 3, so he could see her in her cap and gown before she graduated from Eastlake High School in El Paso.
"Unfortunately, he couldn't make it to any of my sisters' graduations, including mine, so I gave him the honor to be the first to see me before I walk the stage," Silva said in her tweet.
Silva plans to study nursing after high school.
As of this writing, her video has been viewed nearly 3.9 million times.