If you really want to play it and can't wait, you can use
Lunatranslator. I have tested it for some minutes until Mio sleeps in the first night and it works fine.
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The thing is that it won't translate the UI, choices included although you can somehow get those switching ON the hook[in my case] number 13.
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In all that mess you can find the description of the buttons after the label "text" : "Gentle stroke" and "Pat the dog"???[that was a bad translation]
Other than that you will have to screenshot the UI at times and run it through google image translator until you, maybe, memorize it.
But as I said before it works fine for the dialogue, if you use it I recommend[for free options] Google translator and Bing as a second option.