about that wallpaper i would like to say that this *interview* could happened at any time before Emily death. i think we can assume that Miranda visited the Citadel very often.
i've seen a documentary recently where a guy goes to some Somalian city in the center of pirates teritory to make some interviews. he risk his life as those pirates could kill him basicaly at any time. he needed his own armed bodyguards just to reach that city in one piece.
so what i'm trying to say is that for Emily this kind of interview with high rank Cerberus officer could be story of a life

and for Miranda this could be a way to spread the Cerberus idea.
just saying

but for those who don't like that idea there are other versions without the *interview* message