"They used some sort of magical fire in their guns to scatter the Dementors. The flames got a little too close to her and she passed out when the Dementors swarmed her. If it weren't for Agent..." My mother took a steadying breath. "Well, the theory is that there is a tether between you two and when Narcissa depleted her magical reserves fighting the Dementors... I don't really get this level of magic. It's too abstract."