A sense of relief came over her when the holy water had no affect. Capping the flask, she tucked it back into her pocket and then pulled out the anti-possession blanket. "Wear this." she instructed, before basically putting it over Dawns head. Once it was there, she relaxed.
"Okay, so, explanations." she locked her hands behind her back for a moment, rocking on her feet, where did she start? Well, the beginning sounded good. "Okay, so in 2002 there was another end of the world threat. From the First, who started killing off potential slayers and tried to open the hellmouth. So basically you're coming from just before all this started. There was a small army of potential slayers staying out our house for most of that year until we won. Willow did this magic mojo and made all potential slayers into real slayers. But apparently there's like thousands of potentials. So in 2008? We live in a castle in Scotland, with Xander and an army of Slayers. Sunnydale High sort of exploded....again...along with the rest of the town. But it was evacuated." she said, making it all as short as she could.
"And this." she said, waving her hand around them. "Is actually not our world. It's a different world completely, Dawn. New demon rules, new vampire rules, new bad guys." her fingers wrapped around her own anti-possession charm. "This is an anti-possession charm, so demons can't possess you. And you were brought here by what's called a 'seal.' When it was broken rifts between worlds started to open. I've been here for the better part of a year."