I'm Trapped in a Glass Case of Emotion!

Emily Dickinson's "I felt a Funeral, in my Brain" is what my parents like to call melodramatic. The character is stuck in a life of agony and woe, as if they are at the most depressing funeral in the history of the world. But if it really is her funeral, why is she still using so much imagery? I may be wrong, but people generally cannot describe their own funeral so (this is a shocker) the poem is symbolic. A piece of the character is dying inside. She has given up on some aspect of her life and is apparently devastated about it, but knows she can do nothing about it just as a person cannot walk in "lead boots". The character's life will always be the epitome of death and agony. Side note theory, the character is going emotionally psychotic as if she were buried alive.