Rogue/Edmund
I know about the Witch, and the butterfly and the recent battle scene, and the bells Marie mentioned are all signs of her, even if no one's seen her that can tell about it. If she was riding with bells, either she wasn't trying to hide or she didn't realize there was anyone close enough to hear. If you see or hear any sign of her, stay away. She will attack if she perceives a danger, and she doesn't need to be close to use her wand. If She's unlikely to leave such a threat unless she believes it can be turned to be useful to her, and that seems unlik. She collects trophies. Her house and courtyard in Narnia were filled with statues. She uses others, but she has no need to rely on them for physical protection, and she is immortal. I recommend care.
The words mean little, but I'm sorry. I hope you find her.