Liz did briefly pull Stuart up. It was very late in the day though, and all she told him was "We need a better strategy". He acknowledged her point, saying "I know".
Alas, Liz did not take the opportunity to to say what form the better strategy should take. She simply relied upon Stuart to come up with something, when he was clearly out of ideas. LS will have noted that probably.
Liz was sitting on a great sales record and though she had some sort of immunity. She didn't.....