He feels an open summons and lets it grab him -
"More or less. I can open and close all the doors, direct the lift, and I have cameras and audio pickups sufficient to see and converse with anyone in any room of the house. You've also seen my holographic interface, although that is limited to specific rooms."
The elevator lets her off on the ground floor.
"You'll find the kitchen at the end of the hall to your right."
Kitchen! Food in the kitchen! Wonderful things, all of these. She makes herself a sandwich, and then says, "Thanks, Jarvis."
"Is there any - things that you need done by an angel? Walls that you want to be pink instead of blue or something?"
"Okay, let me know. I'll be able to do technology upgrades, too, but for obvious reasons I will want to practice on technology that is not also a person."
"Very sensible," he agrees. "You'd want to talk to Tony about that, but he is presently - occupied."
"Right, that's fine, no pressure. He's probably sleeping off the - three in the morning wake up."
"It's a difficult situation and I'm honestly not sure how to proceed," says Jarvis. "But it's possible that this information might be relevant to your safety, so... While Sherlock was in New York, he discovered that Tony's parents - previously assumed to have died in an ordinary vehicular accident - were assassinated by a family friend. Tony is not taking it well."
"He is currently well supplied in that area, but I will make sure he knows that you offered."
Cam has less trouble feeding himself. He finishes his sugar glass, then says, "Hey, Jarvis? In the interest of not getting crumbs or unnecessary plates all over the place if I make myself anything more substantial to nibble on, can you direct me to someplace that has dishes already?"
The elevator doors are open when he gets there; Jarvis lets him off on the ground floor, then says, "End of the hall to your right."
There are many types of bowls in that cupboard over there! Also chairs at the kitchen table, if he would like to sit down while he soups.
He gets a bowl, and now it is full of tomato soup and a triangle of grilled cheese sandwich with no crust, and he sits down and dunks the sandwich in the soup contently.