>>529997663
3 cost HP echos suck ass because her HP is so high so even 1 cost HP echos are better.
3 cost Aero echos are ok, but less then good then a 4 cost crit because she is so saturated on dmg% and her weapon is HP heavy.
So her preferred setup is 4-4-1-1-1. She is the only character to prefer this setup unless you have S1 Jinny.