Jealous rival

Mandy and Summer were rivals. The two practical lived to outdo the other. So when Mandy was chosen to appear on the cover of Women's Fitness the premier magazine when it came to women's health Summer was understandably jealous. It had been her dream to appear on the cover of that magazine and she would be dammed if Mandy got there first. She needed a way to ruin her rival and take her from cover model to unhealthy model. That way the Summer could hop in and take Mandy's place. The only question was how Summer would do this?