@MrOvis2 What if:
-she steals Harry's first kiss after the Yule Ball
-works for Umbridge in Y5
-discovers & refuses to report Harry's DA activities+flirts
-follows Harry into the DoM
-fights along side the gang until her father shows up
-she sheepishly sides with him
-Lucius kills Sirius
@eternal_prey If they're her cousins they have reason to know and be friendly with her without turning them into beta orbiters, too. She's the princess of the most prestigious Malfoy line and they're from branch families so they become her loyal knights.