Charlie, Bella's trusted (though only recently reacquainted with) father, had asked her a serious question. "What do you mean, Charlie?" She looked at him, clueless confusion on her face.
He scratched his head. "When I asked how you see him, I meant I wanted you to describe him to me from your point of view - your words." Charlie mostly looked sheepish, but his eyes were sharp and interested; the eyes of the man who almost singlehandedly kept his town peaceful, the supernatural aside; the eyes of a protective father.
When his daughter's eyes lit up as she answered ("that, I can do!"), though, he realized he had made a grave mistake.
"...His eyes are that most precious of topaz; his skin is as marble of the finest quality; his hair is of polished bronze, full of shine..."
Her father started tuning her out around this point. He was simply standing there zoned out, mildly horrified and shocked.
(Two minutes and forty-eight seconds later)
"Haa ah ff." She was huffing and puffing by this point, her mumbles long since incoherent, her air supply running out. Soon, nothing could be heard.
Charlie snapped into attention, realizing something was off. Bella was lying on the floor, unmoving. "Bella. Bella!" He shouted in alarm and ran to her, checking her vitals. No heartbeat, and she showed signs of severe oxygen deprivation. "Hang in there, kiddo!" He tried to restart her heart and get her to start breathing again, but his efforts were in vain; he was crying by this point, but made sure to call for professional medical attention.
Even at that point, Bella could have been saved by the injection of a vampire's venom. However, Alice was off hunting at the moment Bella started her rant and very nearly made a literally fatal 'mistake' when a lone woman hiking popped out out of nowhere, her scent having been masked by the wind's complete lack of cooperation until she was right next to the psychic vampire feeding. Even her visions took a back seat to controlling herself in these circumstances.
When Alice got back to her visions right after making sure that the would-be victim hadn't deduced the existence of vampires (though it took some fast talking), she snapped out her cell phone and pressed a button in superhuman speeds, hiding the motion of her hand behind her torso.
It was too late.
Let it be said that Edward Cullen, once known as Edward Masen, died painfully. He first considered going to the Volturi, but he probably wanted some variety. So he simply jumped into a fire. No sparkles were produced in the process.
That incident drove in this lesson in certain people: some things are better left not said out loud, nor written. 'Don't forget to breathe' might have been equally important too.