Ms. Estrich is correct. Apparently Teresa felt that the campaign had been bought and paid for, and that everyone on the Dem side respected that purchase.
My (admittedly catty) prediction is that the Kerrys may be sleeping in separate mansions by this time next year.
I think that Teraisin was making a preemptive strike on the First Lady position, if Mr. Ed had won. Like Hillary, she wasn't going to be a traditional First Lady.