See my post #38 in the thread I cited. No joke at all. Furthermore, the Observer might have changed their headline after the Gov’s PR weighed in. (No evidence yet; just my guess, but look at the timing.)
She was dead serious, and I don’t believe the thought originated with her.
When democrats throw crap like that out there, they do it in hopes the useful idiots on the street will pick it up and run with it.