This whole business is very confusing. For one, it can't be an indian sari because the indian culture doesn't even exist in the Chrono World.
Also, a wedding dress/ceremonial dress is formal. The dress Schala wears at the end of the game, when she is standing on Opassa Beach is also called her wedding dress, or atleast i remember someone saying that, which is totally different to that one in the photo.
And another thing, we don't know wether someone is reading it or not. Masato said that Kid and Serge's adventure starts right after the end of CC. Pretty weird because Leena has Serge when they wake up. Unless Serge looks for Kid.
And the other problem is that Schala is writing that journal, because if someone is reading it, it confuses the tale.
If Schala is traversing dimensions looking for someone in our world, it can't be Serge since Masato didn't say that "Schala would on a journey with Serge". It's all to do with Kid. And then again, the ending confuses everything else. If one is to believe that Schala and Kid merged, as the ending journal writer implies and how Schala was speaking once she was freed, this raises more questions.
Also, Schala said in the end that everything would return to normal, as it should be, and Serge will live his life normally, like everyone else. This would not be true, especially for Leena. I guess this isn't a plothole, but the facts clash.
Yes, I did read CC Resolutions on this matter. But im trying to use game only evidence, and not, for instance the "Serge fell into a dimensional warp and Schala looked for Serge". Besides that, I never heard that idea ever posted on these forums :O Also, Schala is still young in the clipscene, the the journal seems pretty odd. Also, note that the journal, the furniture and photo don't look as if they're in our time either.
Also, look at the concept art and that picture. Look at the boys shoes compared to the concept ones. A lot of changes have been made, and as i already raised the point about the other dress being also known as the wedding dress, this whole idea is invalid.