I think it's strictly and exclusively to set up an appeal issue. By splitting her will into two - "I want to, but I don't want to" it creates the closest thing possible to genuine legal ambiguity for future review. It's too clever by half. Her problem now is that by being overruled by the COA and then upheld by the ASC the first time, it has already brought a higher authority into the equation, and not on the side of Arias; she was hoping the higher authority would come in much later, and land on her side, too late for that now. The fact that she kept with the same strategy for her allocution means the strategy was extremely important to her, but again the fact that the higher courts have already ruled against her means it's already a lost cause, just not enough for her to give up on completely.