@TSP Do you know will there be one shots to tie us over to ~May of next year, one shots like Grun Baela or Jayne Walker? Or new Shirley chapters? Feels difficult to imagine five or so months without any Mori content, or Mori herself not doing anything for five months.
@nutman451 you've got the timeline wrong, Otoyomegatari takes place sometime between 1856 and 1868, sometime between the end of the Crimean War (1853-1856), and both Mr Hawkins and Nikolovsky are veterans of the Crimean war, and the initial Russian conquests in Central Asia. So they really don't have to worry about WW1 just yet, their kids or their grand kids will be the ones dealing with WW1.
As for the racism issue, I'm 99% Talas is white. She's ethnic Uzbek and Uzbeks are Turkic people and Turks are white. So, at least outwardly, no one in England should know she isn't English just by looking at her. Biggest problem would probably be her lack of English since, unless I'm mistaken, she's been communicating with Smith either in Uzbek or some regional lingua franca lika Turkish. Other than that, the other big difference is that she's culturally Muslim and culturally nomadic used to the nomadic lifestyle of the steppes and she's going to be an upper class English housewife now.
It depends on what the next part will be about, as well, and how much story is left. It could be about Amira and Karluk with epilogue focusing on Smith and Talas but I think it's likelier that it'll be about Talas and Smith in England. I do think it's funny that Mori has managed to make a series about central Asian nomands into a series about maids and class in Victorian England, though.
Overall, I'd say that Talas being a fish out of water and befriending maids, like another poster suggested, is the likeliest for the next part and then Amira and Karluk, as well as everyone else will be in the epilogue.