Welp, it's probably just how she refers to this latin American tour leg, which mainly consits of concerts in well south america.... whatever. Puerto Rico is basically in the caribbean and I actually know a good bunch of people that count it to South America, while others count it to North America. If this is thread-worthy is more questionable.
From my knowledge I thought Puerto Rica was next to South America but was still part of the United States; though they were not an official state because they spoke spanish...
And I thought Costa Rica was an island in the middle of the sea, with the nearest human beings being in Hawaii.
So I defend Miley and my mistake, because I did not know they were what they are until I entered this thread...