After reaching her thirties, she suffered a medical event that pretty much pushed over the wall from being strange, difficult and disagreeable to strange and sometimes rapid mood swings and a highly volitile dangerous personality.
The first answer is that, in principle, to give such powers to Parliament or an officer of Parliament would be strange: the very point of the powers is to control parliamentary excesses, and to arbitrate in the event that Parliament is itself unable to come to a decision.