Tonight was different. Many of her favorite people in the Enclave were here: the Merry Thieves, various aunts and uncles and extended family members, and—like an especially gaudy bonbon atop an already gilded cake—Magnus Bane. He had been very helpful in setting up wards around her family’s house the day Christopher had been attacked. She owed him a favor, but she didn’t mind that: she was sure it would be very entertaining when he came to collect. Still, there were two things nagging at her. Although James was one of her favorite cousins, and she very much liked Cordelia, there was something suspicious about this sudden engagement.

Anna had known since the ball welcoming the Carstairs family to London that Cordelia was hopelessly in love with James, and James was hopelessly in love with Grace Blackthorn. She had observed it, noted it, and determined that she would invite Cordelia to tea. Hopeless love was a dreadful state. Perhaps she could talk the girl out of it.

She had realized soon enough that Cordelia was tough and stubborn—and that she, Anna, liked her very much. Enough to fervently wish that James would wake up and see what was standing right in front of him. She had thought the dresses might help—and been quite gratified by the stunned look on James’s face when he’d seen Cordelia dance at the Hell Ruelle. In fact, Anna might almost have believed James had realized Cordelia was the girl for him—after all, Grace had become engaged to Charles, so that was off the table—had it not been for Cordelia’s sudden announcement at the Enclave meeting.

There were many things Anna knew she excelled at, and one of them was being a judge of character. Cordelia Carstairs, who blushed at the sight of a seductive gown, was not going to spend the night with a man she was not married to, even if he was the love of her life. Nor would James compromise an unmarried girl. Anna would bet her flat on Percy Street on it.

As she slipped through the door at the end of the room, Anna glanced back to see Matthew and Cordelia dancing together. Cordelia looked amused, which was not surprising: Matthew made everyone laugh. She could not see Matthew’s face, though there was something in the way he leaned over Cordelia that unsettled Anna. She could not have put a name to it.

Will had come out onto the dance floor; everyone was all smiles as he cut in to dance with Cordelia. Poor Cordelia, Anna thought: it was a Shadowhunter tradition to dance with a prospective bride for good luck. Cordelia wouldn’t get a moment to herself. She looked happy enough to be dancing with her future father-in-law, at least, as Matthew went off to talk to Thomas.