From the end of the second season to the beginning of the third season, multiple characters repeatedly say things like "Ruby has changed," "she has become gloomy," and "she has an aura of darkness and mystery around her," and there are depictions that show that the viewers also perceive her this way.
However, given that, I felt that the direction and the way the scenes were presented were a little weak.
What I want to say is that the impression I got from actually watching her was not that of a "cunning and calculating being." Rather, she seemed like a sad person, someone who had lost all emotion, someone who had lost sight of their purpose, or someone who had stopped thinking. At the very least, in the past series,

Questions about the new Ruby | Cheshire Cat Pinkmoon's post