The woman

 She was the most beautiful woman you've ever met 

And she sang like an Angel
But
That was her plan
She'd draw them in with her looks and her voice
Then once she had you
She would turn into a monster and eat you whole

As soon as you were in her trap
Her head would unhinge
Fangs would show with blood dripping
Then she would open up and swallow you in one one gulp

An inhuman monster she was
And
She was proud of it