Indeed. I merely thought it strange that I couldn't view JP, and she couldn't view NA/EU at approximately the same time.

There were several threads in the past 5 days where people posted an inability-to-access / fear-of-having-lost their NA/EU characters after creating a JP character.
Most of those posts fell by the wayside though without any definitive answer for resolution, and since my wife has been able to view NA/EU again.
(she indicated this a half-second after I clicked: "create thread")

Figured this post could still contain information for people facing a similar issue and give them answers that never seemed to show up in the others.