She let Lucius talk, but pulled away when he tried to touch her. If he got any closer to her right now, she didn't know what she would do, and didn't want to do anything rash. Despite everything, she loved him and she could even understand him having sex with another woman. It had been an emotional time in their lives eleven years ago; she'd lost the baby and hadn't wanted him to touch her for months. The Death Eaters had been at the height of power, and men were weak.
She couldn't forgive that he'd sired a child with another woman. She didn't have that in her. The idea that there was another blond haired boy with the Malfoy chin out there, one she hadn't carried for nine months and who could threaten her son's very existence made her want to scream, tear hear hair out. Tear his hair out. She could feel the instinct to rip him apart rising up, and had to concentrate on not actually tearing her hair out as she finished unwinding the braids.
The laugh startled her, but once she started she couldn't stop. It held a hysterical edge, but she had no control over that either. "You want me to figure out a way to accept your bastard son, without humiliating my son, or myself?" The laughter stopped as suddenly as it had started. "You're right. You're obviously too stupid to do things for yourself."
The most obvious solution, arranging an unfortunate accident, would not work. Not now that people other than Nott knew of his existence. Not when Lucius had lost his mind at the idea of having a second son. It wouldn't work yet, a little voice whispered. It sounded remarkably like Bellatrix. No, it wasn't the time for an accident.
"How could you have let this happen, Lucius? This could ruin us." She would think of a plan because she had to. She'd put too much time into being Narcissa Malfoy, and fought and clawed to make the name mean something after the Dark Lord's fall. Her son deserved a legacy he could be proud of, and now it was stained because her husband hadn't thought things through.