Sadly I never got a reply from that school. Now they have revamped their site. Here's a link to the school's instructors, including Reiko Nomura:
http://www.puretone.jp/instructor
There's a new picture of her and some info. She graduated from a music university in Tokyo in 1996. The FF VI Piano Collections was released in 1994. Square's HQ was probably in Tokyo at that time, unless they moved out and back in at some point.
I sent a new message to that school. I hope they reply this time.