I understand what you are saying; but if Jessica would have seen what Amara was doing she might have stood by her there and maybe warned her about getting too close. It might have helped if we had warning that you were going to purposely eliminate a character that was no longer going to be played.
In any case, Jessica still might feel guilty about letting down her guard and allowing one of the group die so horribly. Will see how this whole thing works out in the end; if too many people get hurt she might feel she is not worthy of the sword that Cor is offering her. We will see.