OK, after giving up on hoping this will be translated by someone who knows what they're doing, I'm giving this my best guess. God help me.

Ikazuchi seems to have discovered she's immune to everything so long as she stays a happy-go-lucky supporting character, rather than a determined main one with actual goals and attempts to push the plot forward...

That probably explains the relinquishing of the secretary post to butt monkey Shirayuki...

EDIT: OK, that seems to be everything... hopefully I didn't screw up anything too terribly besides completely whiffing on that damn letter Kuuderes caught...