Sandra had known Katie a long time, her whole life even… and being friends with Katie, as she sometimes called it, was part-time mental torture.
Katie was one of those people that simply didn't progress at the speed of a normal human, had the drive of a stallion on steroids and just didn't know when to call it quits.
Compared to her—a girl who easily acknowledged when she was tired, found no problem in getting distracted by flashy equipment and viewed the Mighty Warriors as the epitome of mankind's power—, it was hard to keep up when Katie simply didn't see the world that way.
To Katie, her goals and ambitions were a matter of hard work. The Luna also seemed to have developed a numbness to exhaustion as she never showed signs of slowing down even when her limbs went to sleep in the middle of a workout rep.