Cinder,
I haven't lived on the other side of the world but I can very much relate to what you're saying. My parents have moved a lot, though I was fortunate in that I didn't have to change schools (though my siblings chose to.) But I do know about change and having to fit into different cultures and places, in a small way.
For the past few years, I have been constantly on the move, and in some places, had to completely start over each time. I also had a nearly 6-month period in which I was constantly living in different places, sometimes changing places by the day, week, or month. (You'd think I was running from the law, but honest, I wasn't!
)
I also have a sibling who's lived in several different countries and states. One of my struggles is that I don't know what "home" is anymore, which I find to be extremely disconcerting.
For me, "home" isn't about family anymore, because my family members choose to come and go so often and to many different places. "Home" isn't about people, because life changes and the person who is your best friend can have a major life change and is suddenly no longer available. "Home" isn't about a place, because I've been to many different places.
One of my most troubled prayers for years has been, "God, I want to go 'home'", but I have no idea what that is or what it looks or feels like anymore.
I know the "good, christian answer" is that "home" should be just myself and God, but it can feel like a very isolated place to be.
Please feel free to PM me anytime, whether now or when you get back, if you need to talk. *hugs*