If moonlighting is actually allowed at Nintendo (with a few reservations) and she was still fired for that reason, what does that indicated about the nature of her second job? Are you saying Nintendo is lying about why they fired her?
The nature of a PR position is that you are a face of the company both in person and on social media. Are you saying that it was professional for her to post those photos and solicit people for new dresses and other goodies?
I think what she posted is perfectly fine. I guess it's not "professional" but the corporate worlds view of what "professional" means is horse shit.