False sometimes you need it
2. Journey to the Center of the Earth.
In my opinion, they do not only reveal what will happen, but also manipulate events. When Macbeth approached the witches, they could have concealed the truth from him and just let the events unfold, but they didn't do it. They told him about the prophecy, thus initiating the events that soon followed. If they hadn't told him the truth, Macbeth might have never killed Banquo, Duncan, and the rest in order to become king. So yes, they manipulated events and caused a great tragedy.
“With torn and bleeding hearts we smile”
"like" or "as" indicate a simile.
I would say that the answer is: "I swear she cast a shadow white as stone."
hope this helps and have a great day :)