I think this feeling of being followed by a person you know and love (or rather did and or should) can be shared among many, although your wording tells your story and your experiances. It's really nice becuase you make the reader reflect on their life by telling of your own.

Well done. It's so sad and although you use the word 'angry,' it seems more longing and sad.

Woah, i thought this was going to be about a relationship, and now it's about, well let's see, from what i see a dead grandparent. Anyways, good, lol, i'm not too good at reviewing poetry, sorry.