The Death of Aunt Alice

The persona is juxtaposing his aunt Alice's vivid, wild imagination of her life with a very orderly contained funeral service. He feels that her personality is not reflected in the orderly funeral she has got.

"sparrows became vampires" could show that she always had a vivid imagination and that she used to make things up to make life seem unexpected and more interesting. 

There seems to be a contrast between her wild imagination and the finality of her death - she's not here anymore - gone forever - this cannot be changed or altered.