How long to transfer approved k1 from US London to US Lagos emby(Emby level) urgent!!!!?

it's up to the Brits to decide whether she can return to London, but if she has a valid visitor's visa, it certainly sounds like she can. that would be faster than having the petition transferred to Lagos and setting up an interview appointment. hard to say how long it would take to physically transfer the petition, probably under a month, but how long would it take then to get a new appointment? hard to say.