Well it is a chess set for one person, you could use a normal chess set for one side and then use your naruto set for you to play.
This little feather believes a custom made shogi set would be cheaper and would fit better... if not... just get her 2 pieces, save a little buy the other pieces for the next birthday and tadah you have gifts that you know she likes prepared for 2 more birthdays! *cough* jokes aside a set of shogi sounds like a good gift if she wants it to play, but if it is for display, if you can't the full set at once, buy parts of it, save a little to buy the other parts and gift it to her later on christmas or something