Well all that, and the fact it'd be pointless in a comic since it'll just be translated anyway.I've seen other comics and webcomics that tackle this in different ways to get the point across but always they are translated in some way. In DreamKeepers one of the main characters pretty much speaks for his petpal thing; and in Sakuna, whenever this one German dude speaks in broken Japanese, its got symbols mixed in, and when he speaks in English, the words just turn into gibberish to represent how the other Japanese characters don't understand anything being said.Its hilarious. Then in one Batman comic I read, every time a foreign man spoke, these things "<>" would be used in the translated word bubble to represent the fact he isn't speaking in English.That is a little sad you can't use the nisu's as when I read up on some of the art, that it made her sound adorable. But I wouldn't worry about it. Either you'll figure out a way around it or if there is a cartoon, then it'll be just like anime where the character talks in a different language but the subs are there so viewers can see what she's saying at the same time of hearing the nisu's.