My classmate who died in junior high school is still alive.

The world of dreams is wonderful. Just because you dream about her doesn't mean you talk about her during the day, and it doesn't mean you must be sorry for her. And a kind of fear and superstition in people's subconscious, which appears in the form of dead people in dreams. There may be things in your life that you are afraid or worried about, but you don't realize it yet. What you have to do is to overcome this fear. Hint at yourself. If you dream of this kind of situation in the future, don't escape. Ask her why she is chasing you. If she is malicious, hit her with her hands and feet, suggesting that this is a dream, and you can overcome everything in your dream, so that you will gradually become confident in reality.