City Of Glass The Mortal Instruments Book Three

Clary is at Luke's house with Simon packing for her trip to Idris, in which both of them have conversations based on Clary's goal to save her mother, and the struggle she will face when she reaches Idris. Jace persuades Simon to lie and say that Clary decided not to go to Idris, in order to protect her from the Clave, who he feels will try to turn her into a weapon. When Clary visits the Institute, Magnus tells her that the Lightwoods had to travel through the portal, due to an attack by Forsaken. During the battle, Simon is injured and Jace takes him to Idris to save his life. With her power to create runes, Clary is able to create a portal and she travels with Luke through the portal.