At times we dream about deceased relatives or friends simply because we miss them. These dreams may be disturbing but most likely are a form of wish fulfillment or are based on memory through which we relive old experiences. Some people believe that in dreams they meet up with the deceased on the inner planes and engage in “real” interactions with them.
It is normal to miss and long for the people that we loved and that have left the physical body. Therefore, it is not surprising that they will pop up in your dreams from time to time.
A personal belief system plays a large role when obtaining a satisfying interpretation for dreams in which the dead talk to the living.