Nathan picks him up and hustles him behind the nearest, sturdiest tree.
They don't really make a lot of northward progress over the next four days, and then Nathan says, "Timer says now, for going to meet Henry, do you want to just teleport us to Jaipur?"
"Sure," he says, laughing, and spends a pentagon. They appear in an unoccupied room in the appropriate capital.
"Come in!" calls a cheerful woman's voice.
Nathan opens the door.
Rosalie is, subsequent Heidi's demise, the most beautiful vampire in the world by any objective standard that doesn't account for personal types - and given the baseline vampire beauty, this makes her the most beautiful person in the world. She is smiling with the radiance of a sun. The baby in her arms doesn't look four days old.
"Nathan, hi!" she beams. "And this must be your new mate."
Rosalie kisses Henry on the forehead. "Thank you! Isn't he perfect? And he's all mine and Emmett's, and we thought we'd never - well, I do have you to thank for that, don't I, in a roundabout way?"
Nathan takes the baby from her and makes faces at him and gets faces made back; the baby looks months old, not days. And then he hands him over to the Joker.
The Joker holds little Henry and cuddles him and makes even sillier faces than Nathan, and listens gravely to the burbling he gets in reply.
Henry reaches out and grabs the Joker's nose. He is only a little baby, and only a half-vampire, but he is still very strong, and if he is not made to let go, the nose will give way soon enough.
He giggles, and doesn't do anything about the nose. He'll just grow a new one, right?
"He's fine," says Nathan. "Bounces back. You didn't hear anything about me begging lessons from your cousins, did you?"
"Well... no," admits Rosalie. "But you could've been waiting."
"Not everyone is your sainted father, Rosalie," chuckles Nathan.
"I get better," he confirms brightly. "A squished nose here or there doesn't bug me."
"Lots of very lovely magic," agrees Nathan.
Rosalie shrugs and hands Henry back to the Joker. "Elspeth was very gentle with humans when she was little, but we didn't have her around many and the first was - oh, she was at least a month old," she muses, "so I suppose she might have been inclined to grab at people too, or even bite - Henry hasn't tried to bite anyone, but if he looks like he's going to, stop him unless you want to turn, male half-vampires are venomous."
"He's immune to venom," Nathan supplies, winking.
"That's all I need to know," says Rosalie.
"Aren't you a cute little nose-grabber," he says.
"Already he talks," marvels Nathan.
"Elspeth took longer, but then she had her talent, she didn't need words so much," says Rosalie. "He woke up calling for mommy this morning." She's utterly glowing.
"Well, it wouldn't have been so bad if he'd wound up with another, but yes, he wakes up at eight in the morning, goes to sleep at midnight," says Rosalie.
The Joker progresses from making silly faces at Henry to making silly noises at him. He is enjoying himself tremendously.
Henry makes noises right back, babbling like a champ and uttering occasional words such as "up". A fair fraction of his words are not in English and the Joker may be forgiven for not recognizing them.
"He'll sort it all out by the time he's two weeks old," says Nathan, waving a hand, "he's a quick little cutie, isn't he?"
"Very," says Rosalie warmly.
There is further cooing over Henry, and then Henry says "thirsty", pronouncing the word quite clearly, and Rosalie takes him back to offer him a bottle of Elspeth's golden bubbly, which he sucks down greedily, and Nathan leaves her be, motioning for the Joker to follow.