Technically, being close isn't so much the issue; while less likely, you could get the same IP as someone across the country, especially if you're on a provider like, say, AOL. Since the other nation is only two days old, I'd personally suggest getting your friend to delete it as soon as possible and starting from a fresh slate. You may have just gotten unlucky and had one freak IP assigned the same. If it happens after the reroll, well then, you're looking at a more permanent problem and will have to live with it.