Maybe if there's a lot of combustible material and the fire is growing rapidly... If conditions are too dangerous to permit rescue by the time the fire department gets there, nobody will have to risk dying to bring her out and they can focus on limiting the spread to nearby homes.  With enough heat and fuel, hopefully there won't be too much of her to deal with when they recover her remains -- teeth and maybe some bones. As an aside, I'd like to imagine that she was cooking up a midnight snack/meal/buffet and forgot to turn off the oven or something.  Just another way she's been disfigured and endangered by her own boundless gluttony.