Remind everyone to be careful. She doesn't need to be close to use her wand. She is known for snow and ice and for turning her victims to stone, but those are not her only methods. If she has leisure to take captives, she will torture for spite, and she will not hesitate to kill, if she does not. Her magic is limited without her wand, but she is still powerful. She was rendered immortal by magic in the early days of Narnia, so no one is to assume they can easily take her out.