Lucius hid a smile, lifting his chin to look down the length of his nose instead. His son and daughter-in-law had been very clear that there were certain aspects of their lives in which he was not to interfere, but that didn't mean that he couldn't observe. Possibly make a few suggestions here and there. When those suggestions would lead to a better life for his grandchildren - more beneficial and profitable, he admitted to himself - he was perfectly fine with making them.
The look on people's faces when they realized he was doing something for his Muggleborn daughter-in-law, well. That was often well worth it.
He swept out of the office and into the lift, silently amused with the way that obsequious clerk had scurried to do his bidding. At the next floor, the lift stopped, and Lucius interrupted his private mental laughing to raise an eyebrow at the woman outside the doors. When they opened, he stepped aside and gestured her in. "Hermione," he said. "Fancy meeting you here."