Ugh, I knew someone would bring this up someday. :P
Posted under General
Japanese official site for additional reference.
Soljashy said:
I don't see what's so horribly wrong with this.
I prefer Millay because it both looks better and because I've adjusted to it, but her name is officially Milly and therefore that is what is correct. I also have to constantly stop myself from adding "Milly", so I figured I'd finally bring it up.
Thank you, jxh2154.