With the list of ingredients in hand, Luz made her way into the forest with no idea what she was doing. She didn't really even say bye to Eda, though honestly it was normal for her not to at this point.
Because of this, and her inability of knowing the consequences of her actions before and sometimes after doing them, she was shocked when she was quickly faced with Amity. "Luz, are you seriously doing this?"
(Amity heard her talking about it with Willow)