Surprise then relief filters onto his face next, grateful he hasn't committed some grievous faux pas. It was bad enough learning the American customs, but then he had to put them up against some of the slightly different British ones...

Cassian relaxes, but he does stay at attention after she introduces herself and makes her request known. She might not be the mother, but she's still traveling first class, so he simply nods politely. He steps in quietly, and only after he is closer does he bring his arms back around front, reaching in to neatly tie the little bonnet back on. He manages to keep a decent amount of space between them, but his arm does brush against her as he finishes up the near perfect little bow under the baby's chin. She makes a noise at him, tiny fingers papping at his much larger ones.

"There. Unless she knows how to untie too, it should be safe from frustrated hands."