Bran was not a man of second chances, and when Ella screamed he squeezed her throat tightly enough to cut off any further attempts at screaming for help. "What did I say?" For good measure he shoved her against the brick wall, nearly tripping over the vines that seemed to have suddenly increased in number - and in strength. Fighting them only made the damned things constrict, and suddenly an idea came to him, so absurd that it just might work. It was said that music soothes the savage beast, so why couldn't it apply to plants? He'd avoided being attacked by a wolf once, years ago, by singing to it; and miraculously it had worked. The same concept might work here.
The first song that came to mind was something from one of Lotte's tapes, but he barely had time to consider the appropriateness of it. Bran simply began to sing, his voice low enough as to not attract unwanted attention, but not quite so low that it couldn't be heard. He focused on the emotion rather than the words, trying to lull the vines into submission.