Two Important Moments in The Force Awakens Novel That Weren't On Screen

I finished reading the novelization of Star Wars: The Force Awakens today and came across two moments that caught my attention. Both occur during the fight between Kylo Ren and Rey. 

As we see in the film, Kylo Ren injures Finn and causes the lightsaber to fall into the snow, followed by Ren trying to seize it by using the Force. Then, instead of landing in the hands of Kylo Ren, it lands in Rey's outstretched hand. Now, in the film, this moment has no dialogue, but in the novel Kylo Ren says, "It is you." Does Kylo Ren realize that he is face to face with his cousin, or sister? However, I still firmly believe that she is Luke's daughter. There are too many hints for it not to be, and the way this particular part is written and delivered in the audiobook, I think it's true. 

Later, after Rey is able to beat Kylo Ren and has the ability to strike him down, she hears the voice of Snoke in her head. Only two words are spoken: "Kill him." Snoke realizes Rey is very strong with the Force and is tryin to corrupt her, just as Palpatine did to Anakin and Luke. Remember, in Revenge of the Sith when Anakin has Dooku on the ground with both lightsabers around his neck. Palpatine tells him the same thing. To kill Dooku. Rey even entertains the thought in the novel but quickly turns away from the impulse to do so. 

Specifically, these two moments in the most pivotal part of the film contain some very important pieces of information that could find their way into Episode VIII. I'm also curious to know why they weren't included in the film. 

Thoughts?