Speculating made her tired. Planning a war made her exhausted. What used to excite her no longer did. When she was a mere child searching the country for horcruxes, she took charge because she had to. There was no one else. For the immediate future, she was going to do as little as possible. Her endeavors with both Draco and Kingsley failed. Evidently, she no longer possessed what was required to do the dirty work their present situation required. Maybe Antonin was right.