I pronounce Kuu's name just in the form of "Koda Kumi", because in Finland most of the words are pronounced in the same form they are written. In english I may pronounce Kuu's name in the form of "Kouda Kumi" or "Kumi Kouda" though that sounds stupid imo.
So I speak of her as Koda Kumi.
Btw, the topic title is awesome. <3