“Clary widened her eyes, which was good for keeping herself from crying. "Isabelle, can I ask you something?""Sure," said Isabelle, wielding the eyeliner expertly."Is Alec gay?"Isabelle's wrist jerked. The eyeliner skidded, inking a long line of black from the corner of Clary's eye to her hairline. "Oh hell," Isabelle said, putting the pen down.”

“What did Isabelle want?" Jace asked.Alec hesitated. "Isabelle says the Queen of the Seelie Court has requested an audience with us.""Sure," said Magnus. "And Madonna wants me as a backup dancer on her next world tour."Alec looked puzzled. "Who's Madonna?""Who's the Queen of the Seelie Court?" said Clary."She is the Queen of Faerie," said Magnus. "Well, the local one, anyway."Jace put his head in his hands. "Tell Isabelle no.""But she thinks it's a good idea," Alec protested."Then tell her no twice.”

“She mounted the steps and took hold of the heavydoor knocker. It was shaped like a pair of angel's wings, and when she let it fall, she could hear the sound of echoing like the tolling of a huge bell. A moment later the door was yanked open, and Isabelle Lightwood stood on the threshlod, her eyes wide with shock. "Clary?" Clary smiled weakly. "Hi Isabelle." Isabelle leaned against the doorjamb, her expression dismal. "Oh, crap.”

“Isabelle says the Queen of the Seelie Court has requested an audience with us.""Sure," said Magnus. "And Madonna wants me as a backup dancer on her next world tour."Alec looked puzzled. "Who's Madonna?""Who's the Queen of the Seelie Court?" said Clary."She is the Queen of Faerie," said Magnus. "Well, the local one, anyway."Jace put his head in his hands. "Tell Isabelle no.""But she thinks it's a good idea," Alec protested."Then tell her no twice."Alec frowned. "What's that supposed to mean?""Oh, just that some of Isabelle's ideas are world-beaters and some are total disasters. Remember that idea she had about using abandoned subway tunnels to get around under the city? Talk about giant rats—""Let's not," said Simon. "I'd rather not talk about rats at all, in fact.”

“What's this?" he demanded, looking from Clary to his companions, as if they might know what she was doing there."It's a girl," Jace said,recovering his composure. "Surely you've seen girls before, Alec. Your sister Isabelle is one.”

“Oh, for goodness‘ sake,” yawned Isabelle, “Is he really waking us up at this ungodly hour just to prove his love to you or something? Couldn’t he have called? mundane men are such twits.”(Thinking its Simon when the “doorbell” of institute rings)-Isabelle to Clary, pg.188-”