Amy Kulp

The most dangerous friend is the one you can't see. Anelia used to be the pretty, popular girl. But after a lonely summer filled with comfort eating and silent shame, she returns to school heavier and completely invisible. Her old friends drop her. The comment start. The stares sting. She hates her body. She hates herself. Then the school's bad boy, Ryker, notices her. For the first time in months, she feels wanted.
But when their fragile connection is torn apart by Lauren, her ex-friend with a cruel agenda, Anelia is left more broken than before. That's when Ana shows up. Ana offers control. Ana promises perfection. With every skipped meal and punishing rule, the pounds vanish - and so does Anelia's ability to stop. Ana isn't a guide. She's a weapon. A voice that praises her for shrinking, even if it's killing her.
Classmates begin to worry. Anelia keeps mentioning Ana, but no one knows who she is. No phone number. No record. Just whispers in her head, demanding more. Who is Ana?