Base on the question that is asking to identify the language that is used by the author in a story and base on mu further investigation and research, I would say that the answer would be a Figurative Language. I hope you are satisfied with my answer and feel free to ask for more if you have question
It means that if you do not speak up about being depressed or "in pain" people around you that you interact with will unknowingly kill you on the inside and when/if you speak up they will assume you enjoyed it because you did not speak up before. Its a metaphor you see... if someone were to continuously stab you and you didnt speak up, they would stab you to death and assume you liked it for not acknowleding your pain. (excuse my terrible grammar im using an uncomfortable tablet with no auto correct and am trying to type this fast.)
Do both at the same time you dont want to disagree with the person and always usean appropriate level of formality.
Is this a show, movie, or book?
True but I'm not sure that is a question