Actually, right at the tail end I'd made a note to myself that she no longer embodies the Crown, so she's just a regular person like the rest of us. I would assume she could be summoned without being rude to the Crown and she could be considered a witness with relevant information on what transpired in the same capacity that an official from that office would be. You seem to have made that point at the end, but....
On June 13th, 2007. See this statement in context.