They don't stop at anything do they? I am glad that Draco stood up for himself. If they want for Teddy to have a male model in his life, Narcissa can marry her precious Gawain. Or Teddy visits regularly with Harry. Sooner or later they might move in together and then he has two male rolemodels and a chance to grow up tolerant and open to the world.

She already has no respect for his private life, to subject himself to her constant intrusions into his life, well Blackmadness has different forms it seems.

He could aleays block Narcissa from the floo though ;)