This piece I think shows loneliness. The way the young woman has nobody so a wall is hugging her. There is a contrast between the wall and the woman. The wall been black and the woman being white. Which could mean she is being brought Into the dark side.
Depression is a real illness- not a weakness or a character flaw- a person can't just "snap out of it" or "get over it" and they are not just feeling sorry for themselves or seeking attention- Medical treatment is often needed. There is no shame in seeking treatment for a mental illness- end the stigma and save lives.