Thanks for the info on Themis
On Ranger Ricola wiki page, it says the Trap (Cannot be placed on a slot occupied by an enemy) non CC.

My question is if I CC her will I be able to place traps on an occupied spot? I don't have Anya or a Necromancer for Soldier in the Tower in the Magic City Arc.
Just want to be sure about this, I don't have many fodder units to waste.