Why touchy ? So what if she is a native American ?
Age of Empires 3
Assassins Creed ?
etc etc - bunch of games use the concept Natives in their games/movies/books. No reason to feel bad about it, there is no taboo on checking out other cultures and using inspiration drawn from them in whatever.
To hell with political correctness - really hate this term they use to defend stuff like this and much more (usually bullshit nonsense crap). Thats like playing a WW2 game as Nazi Germany and feeling offended because "hey, Germany is no more a Nazi country oi !".
Same with playing a game like Ninja Guiden and such, you dont hear Japanese complaining about "gaijins" using the concept of a Shinobi.
And this can be said for whichever culture in all honesty. If everything was tabooed as a touchy concept that is not politically correct, then pretty much every person would have to stick to their own country, never cross the borders, and never learn about other cultures - and as we have seen, isolation politics does not work.

I for one really like the design of this girl. Something more unique. By this point bunch of the girls look the same to me as far as the design goes and its good to get a breath of fresh air ever so often. Plus as someone interested in Native American culture, find it cool there is a FKG designed with that intent in mind, rather then it being "touchy" or "inappropriate".
She has this cheery, energetic looks, which is nice on by itself.

As for joining DMM - I made a test account there. Even now I still play Nutaku version, but in the span of 1 and a half month, I got bunch of gacha Gold, 1 rainbow, and TONS of crap to use (ampys, manyus, blooming material, gifts, etc).
DMM is EXTREMELY generous. Just this month they gave out 32 flower gems - just like that, for no reason at all. You can spin a 10+1 gacha every 2 weeks. And if you clear the stages as your priority you´ll soon have bunch of gems just lying around waiting.
Never mention all the extra stuff, they give out on weekly basis. One promo giveaway ends, another immediately starts. To say it simple - the sheer amount of stuff they throw at you is insane and extremely generous. You also get a 200 slot storage box in your inventory so you can save the crap and sort it out later.

I play both versions. I spend bunch of money on nutaku, plus I can read the english story/h scenes. However I also play DMM simply because I can enjoy the game more with all the stuff. Makes me enjoy more my Nutaku account as well. Its no fun waiting 2 months for a single pull just for it to be a bronze silver bullshit. Meanwhile DMM can keep your morale up to not give up on the game. A fair Warning though - DMM has no autorun. Doesnt bother me that much as I run two monitors so easy to handle.

Oh boy... thats a bunch of text I wrote, in just what was ment to be a short reaction to other posts :P