The Montclaire's were of Shadowhunter blood, intermingling with the Herondale's to create Jace Herondale. But his mother, Celine, had a brother, and that brother had a daughter born shortly after Celine's murder. Sebastian Morgenstern knows about this, and what better way to get back at Jace than to make his only family member fall in love with him?
Mortal Instruments - Rated: M - English - Romance/Adventure - Chapters: 1 - Words: 3,976 - Reviews: 2 - Favs: 4 - Follows: 3 - Published: 7/7/2015 - Jace W., Stephen H., Celine H., Sebastian V.