Since it was evening, Diana had been on patrol when she received the message, routed through the transmitter in her earring. So, Peter needed her help at the Hyperion..she wondered if it was the one called Willow, as she banked left in the air and flew towards the ravaged hotel.
As instructed, Diana landed by the rear entrance, although she'd passed close enough to the main fray to see the battle engaged. As much as she disliked being anywhere but on the front line, she respected Peter's judgement in this as the battle leader. Clark was there, as was his doppleganger, plus others exhibiting powers. It should be enough.
And there was much to do here. Already, vampires were converging on the rear doors, albeit in smaller numbers than at the entrance. Short work, but satisfying enough, Diana concluded, as she tore into them without a second thought.