Lena Shadowhunter: Her shadowhunter story

This is a story about a girl named Lena, who findes out she is a shadowhunter. As a descendent of Jonathan Shadowhunter-the first shadowhunter ever-she must go on an adventure and encounter demons in various forms, Lilith's children, The Night Children and the werewolves. She mustn't fail this adventure, otherwise her loved ones with all be slayed.