Nej, eller åtminstone inte omedelbart.
Annars, efter att Hermione hade försvunnit Harry's potion, kunde de ha återställt det. På detta sätt hade Harry undvikit en noll.
Istället låter det som att hon ångrar att göra något irreparabelt (betona min):
At the end of the lesson he scooped some of the potion into a flask, corked it, and took it up to Snape’s desk for marking, feeling that he might at last have scraped an E.
He had just turned away when he heard a smashing noise; Malfoy gave a gleeful yell of laughter. Harry whipped around again. His potion sample lay in pieces on the floor, and Snape was watching him with a look of gloating pleasure.
“Whoops,” he said softly. “Another zero, then, Potter...”
Harry was too incensed to speak. He strode back to his cauldron, intending to fill another flask and force Snape to mark it, but saw to his horror that the rest of the contents had vanished.
“I’m sorry!” said Hermione with her hands over her mouth. “I’m really sorry, Harry, I thought you’d finished, so I cleared up!”
Harry Potter and the Order of the Phoenix, chapter 29, “Career advice”