I wouldn't be surprised if that's how it works anyway, or at least, if there are mechanisms in place for it. Based on the fact that the Clan structures appear to be matriarchal, and yet Sarek and Spock both stayed with T'Pau's house.

(...although I suppose the other possibility is that Vulcan clans are *strictly* matrilocal, and T'Pau simply adopted Amanda in order to get around the problem of offworld women having no clan.

...now I want that story. And that story as applied to post-Reboot reconstruction.)