Of course she's global, she's selling singles and albums all over the world. Even though the majority of her sales are from the U.S., RED sold a good 2-3 million copies outside the U.S., which is more than what some of our fave's last albums sold WORLDWIDE.
Local. I don't believe she's sold more than at least 3 million albums outside of the US with an album.
Edit: I wouldn't call her COMPLETELY Local, considering she does decently in like 3 or 4 other countries on a regular basis, but she's much more local than global.