It’s not merely “evil”. It’s an attempt to destroy a man’s life, eradicate his humanity and destroy justice on a global, if not cosmic scale. It is as if Satan himself were speaking his lies through her and it must be eradicated. Lock her up, destroy the key in a blast furnace.
“Thou shalt not bear false witness against thy neighbor”. God thought it was so evil he reserved a spot in the Ten Commandments for it.