She got up and side-along apparated both to the edge of the wards at The Burrow. She could see the lights inside the house from where she stood and felt a ripple of magic rush over her as she crossed the wards to the barn near the House. Setting the unconscious body of Fred nearby, she set fire to the barn and fired off the dark mark into the sky "MORSMORDRE!" using Avery's wand. It was simple enough for her to cast, as it required no intent as the unforgivables or the Patronus charm needs.