Why are half of my Metro apps in Japanese?

I set up an account of Windows 8 for my girl friend only to come to the shocking conclusion that it thinks its from Japan (or well somewhere strange):

I noticed she had filled in Swaziland as her location on her Windows Live profile, but I don't recall them speaking Japanese there.

Meanwhile my account seems unaffected and even a local (non-Live) account seemed affected. So far I couldn't find the right setting that would let me change the language of the UI itself.

Any suggestions?

If my comment of learning Japanese doesn't work, do the following:

(may be an easier way, just haven't learnt it yet!)

Open up an Explorer window, and click on Computer

Once in Control panel, click on Language

From here, make sure your language is added, if it isn't add it.

Next, move your language to the top of the list and that should be enough to make it the system default. If it doesn't, click the Advanced settings button on the left.

From here you should be able to install additional languages. Put in the Windows disk and browse to the Langpacks folder on that disk.

(Giving all these pictures as if you are not using your language, the visual clues may help!)