Maytal Zchut 
It Happened On Hyde Street: Devour #1 (One Shot) [PDF ebook] 

Look thin…or die trying! With an impending wedding, Lily needs to lose weight to fit into her wedding dress but struggles to shed some pounds. And what’s worse, her super-thin grandmother relentlessly disparages Lily’s approach, instead lavishing praise upon a quick-fix miracle supplement called DEVOUR, as hawked by the mysterious health guru, MISS GOODBODY. But is taking it worth the cost? In this extra-length one-shot nightmare, when it comes to Devour…all you need is one.