Finished off the iconography project yesterday afternoon and sent it off to my boss. Got an email back surprisingly quickly, given other email had received the silence treatment. Maybe he's used to being silent being married to Horseface. In any event, email received as follows.
"Thanks for the work. Surprised you had enough time to get it done with the radio quiz and all."
That was it! Evidently Horseface believes revenge is a dish best served cold (and probably small).
No further word from boss, so not sure best way to respond, but given I've now got no work I have all morning to decide.