Lucius provided where Narcissa would be within the manor and didn’t feel regret in doing it. Especially when he felt he had been tricked into marrying the youngest Black sister, led into the false sense of the fake promise of giving him at least three to four children, only for the bitch to turn on that word the second their marriage was cemented and only allowing for Draco to be in existence because it was her duty to have at least one child. Wasn’t to say she never cared for Draco, she did. But it was only on the terms that benefitted her, which became more and more clear to Draco as he got older, (though it was fair in him wanting to hold on the possibility that his mother did value and love him for more than keeping appearances).