Lucius is, when it comes down to it, a rather self-serving type. This remains true across the timelines, though there's no telling whether, if it came down to it, he'd tell a convincing and bald-faced lie to keep from Azkaban in this world. Still, there's enough of the same personality as Draco knows for him to what he'd consider reasonable precautions. Directly annoying Rodolphus is an unnecessary risk. Of course, directly annoying Bellatrix would be what most would call an unnecessary risk, but she knows how to get under his skin and does so, frequently. He does the same, though it has to be noted that Bella lacks the same concern for unnecessary risks in general. That's why he'll probably be the one confiscating the m.i.a.v.i. later.

It's also why he's the one who just eyes her, then eyes Draco, then eyes the chocolate. No, he's not entirely sure he wants to stagger into Lestrange Manor, Malfoyesque Muggle in tow. Rodolphus will either really enjoy the surprise or...really not. Mm. Maybe a good night to see to his supervisory duties, he thinks, after a bit of play. "They're called pounds, love. She gets confused. Still calls everything a...." What had they used when he was at Durmstrang. "Kroner." He smiles beatifically. "Have you anything exciting other than sandwiches penciled in tonight?"