Commencement proposal appropriate?

Emily Hawley proposed to Salutatorian Josh Walker after beating his GPA by .001 to become the valedictorian of their class at Centenary College. Emily asked Josh onstage at the close of her commencement speech and asked him to marry her.

The two have been dating since their sophomore year of high school, and, yes, he did say yes. Watch the video and see for yourself.

Was this appropriate? Did she take the spotlight away from all the other graduating students that were in the Commencement Ceremony? What do you think?