Harry was presume dead, until he roll out of Hagrid's arms, everyone was shocked.

Voldemort: "HOW!?"

Harry clench his jaw.

Harry: "It was a distraction.."

Voldemort eyes widen.

Voldemort: "Distraction? For?!"

Harry smirk and look at his left, and here you came, you, the twin sister of Harry Potter, same glasses, scar, height..

And you were wearing the Death Eater's clothes, and the Death Eater mask in your left hand, you were walking confidently to them, with a smirk, and the lot of Voldemort.

All the Death Eaters behind you, following because you did the Imperio curse on them, your right hand in your pocket, everyone shocked if course.

Now Voldemort know that Harry pretended to be dead, so you, Harry's sister can take control of his Death Eater.. Smart move that even Draco Malfoy your enemy is very shocked and impress..