The reader should observe and analyze the authors perception of the words and the " tone " set in the story.
Get into a quiet place and just read
5) to provide a hint to the audience about what will happen later in the play
Well, using my limited knowledge, "cleaving" means to chop, break in half, split, etc. Twain means twice. So, perhaps it's like "you've broke my heart in half", something along those lines? hopefully this helps you.
It is a simile. A simile is comparing two things with like or as. Example: "They were as quiet as a mouse". Now never confuse this with a metaphor which doesn't use like or as, but still compares two things. Example: "She is a walking encyclopedia" . This is telling you indirectly that she is a very smart and talkative person. A simile would tell you directly
