In Episode 22, after being released from being brainwashed, Ryƫko cuts off Nui's arms and absorbs its Life Fibers, which leads to Nui losing her cutesy demeanor and swearing revenge.
Ryƫko cares for Senketsu and considers him a dear friend, even to the point of saying that if Senketsu were to be taken from her they would have to pry him from her cold dead fingers.
RyĆ«ko flying towards RagyĆ and the Original Life Fiber RyĆ«ko and Satsuki, reassured now that Mako is defending the Naked Sun, continue on their flight to the Original Life Fiber and RagyĆ.
RagyĆ then attempted to fuse Life Fibers with an even younger child, her newborn daughter.
Isshin revealed the Rending Scissors as his life's work, a weapon that could cut and destroy Life Fibers.
Later on, she is shown to be quite embarrassed when she is forced to fight in Senketsu's very revealing alternate form, though she overcomes her embarrassment in showing that while she is not afraid of fighting to her death, she is somewhat self-conscious.