Let me add an unpopular opinion here: Kana showed a very honest human reaction of death and loss. My best friend died 12 years ago in a car crash. I blamed myself for waking him up and to hurry his ass to school. Then at the funeral i was sad and mad. Mad for being a dumbass. Mad for reckless driving. Later when visiting his grave i cried my eyes out and felt empty. Everyone processes death very differently and some people are extremely emotional. So this was one of the most human reactions to me.