Fortunately for Peridot, Strange did not laugh when she got patted on the head. However, he very visibly bit down on his lip to keep from laughing so that kind of counts.

Strange also doesn't have much to contribute to the reunion. But any skepticism or worriedness he had about this whole thing melts away as soon as he sees that Ignatius is okay with this whole thing. It's always nice when worries are proven wrong. He's not entirely sure what Iron Forged means by the others but hey, if they're talking about family...

"The Gilded Mark is here also," he explains. "I assume you knew that already, but if you didn't..." he trails off with a little shrug. If she didn't know that, then she does now.