Actually, I expect it will be less Elizabeth not putting up with it and more the courtiers who make up and enforce The Firm. They are not to be trifled with as Diana learned to her chagrin.
Di was a manipulative, emotionally and mentally unstable, immature, completely unsuitable spouse for Charles. OTOH...Markel is most of those things but also utter trash, who SHALL prove to be far worse for the FIRM and the UK!