Ever since he had received O'Hara's message, Arcturus had gone about his business with a lighthearted giddiness that wasn't entirely justified by the good news. It was the combination, perhaps, of his serious worries about Hamilton after that morning's visit, and the talk he'd had with Miss Becket afterwards, followed by a sudden wonderful surprise. He'd known that O'Hara was working on this, naturally, but he hadn't been able to guess at how long it might take, and hadn't dared to ask.
The front door was flung open before Miguel even had time to make it all the way up the hill, Arcturus standing in the doorway in anticipation. 'O'Hara! Splendid to see you!' he greeted his friend warmly, before stepping back to allow him into the house. Under other circumstances, he might have been immensely perturbed by the other man's sudden feminine appearance, but today that wasn't the most important thing. He could try to ignore it. He was trying to ignore it, and he reached out to offer his usual hearty handshake. 'Do come in. Will you have a drink?'
Behind Arcturus, at the foot of the great staircase, stood Sirius. He watched, wide-eyed, as his uncle invited a lady into the house, and started talking to her all wrong. You couldn't just call a lady O'Hara and shake hands, even he knew that, and being friends with Mr O'Hara didn't mean it was alright to talk wrong to his relations. Uncle Arcturus, young Sirius decided, was being very rude, and he didn't know why, but he was going to do something about it.
He stepped forward. 'How do you do, ma'am?' he asked, before giving a little bow, and giving his uncle a pointed glare. Why did he look like he was about to laugh now? That was even ruder!