She stopped two feet from him. The pain in her face wasn't from the gash. “You’re going after Voldemort’s soul fragments. In the middle of a siege.”
“Potter,” she said, not loudly, but with a clarity that cut through the chaos. “I know you’re here. I saw your Patronus—a stag—leading the house-elves to the kitchens ten minutes ago. Don’t insult my intelligence by denying it.” Harry Potter And The Deathly Hallows Part 2 -20...
Hermione was already running toward the transfigured ramp. “Move! The diadem won’t find itself.” She stopped two feet from him
Harry hesitated, then pulled the Cloak from his head. Ron and Hermione did the same. McGonagall’s eyes widened for a fraction of a second at the second Cloak, but she didn't comment. She strode forward, her tartan dressing gown (she had been roused from her chambers) billowing behind her like a battle flag. In the middle of a siege
Harry opened his mouth to thank her, but she had already turned away, her tartan dressing gown snapping as she marched back toward the sounds of battle, shouting a hex that turned a section of falling ceiling into a flock of angry, razor-beaked sparrows.
Harry took one last look at McGonagall’s retreating figure—small, indomitable, a lioness in tartan—then pulled his Invisibility Cloak back over his head.
“Then we go through the walls,” Ron muttered. “Literally. We know the secret passages behind the tapestry of Barnabas the Barmy. We can get to the seventh-floor corridor from the fourth-floor balcony if we use the old servants' stairs.”