Dream: constant dreams about dead grandparents - always in contact with them alive in their home. Also many events take place in a dead aunt's home but she is never there.

Interpretation: the dreams about the grandparents - is probably due to - the great impact they had on you life.  The frequency of it - displays the level of your - grief.  People grieve in different manners.  Some show no outward signs of grief but bare it in their body or subconscious - through behaviors and attitudes. 

The reference to your aunt - suggest that - she was not well liked or she was not well known - so the level of your grief is lessened - for her - to the point that you can fellowship at her house and be okay with out her being there.