"Narcissa, I'm disappointed in you, thinking that I would not be smart enough to have thought about that. There is a charred corpse in my cell that is about my build. It looks like a case of magic gone wrong. A spell cast without a wand that created a failure. No one will be looking for me. Besides, several more high profile Deatheaters escaped as well, ones that they will definitely want to get back more than me."