Richard smiled as he followed the bustling house elf. He generally preferred to set the household spells himself, using magical conduits and involving the structure of the building itself in everyday chores like dusting and cleaning. After their actions during the Battle of Hogwarts, he couldn't say that he really trusted the little blighters all that much any more. They were still the way most Pureblood houses did things, though.
From his days involved with construction and project management, he recognized and generally approved of the subtle use of wizarding space to improve on what appeared to be an interesting little house from the outside. He could feel the magic around him - not something he chose to do in his own manor, since it would interfere with many of his muggle - he didn't care for the word, but Cassiopeia seemed to prefer to use it - technology and toys that were part of his everyday life.
"Please, Miss Black," he replied, after straightening from his half-bow, polite and correct, but easily done, not stiff and formal. "The relationship is distant, as are our times, yet you are still family. Do call me Rich, or Richard if you prefer." He set the pastry box down on one of the low tables. "My surprise for tea, and a little trinket for your amusement in commemoration of your kind invitation." He handed the smaller blue box to Cassi, where the enchanted silver rose awaited her unwrapping in a nest of tissue paper, before sitting on one of the other couches.
Appropriately for a semi-formal afternoon call, he was wearing a dark bespoke suit. It was from the shop of one of his friends in the Parisian wizarding fashion industry. Expertly made, it was of a French cut, a trifle less stodgy than the traditional British. His white shirt was the standard crisply pressed linen, his tie of Hong Kong silk, also hand made, his low top boots of fine Italian leather.