It means you still miss her. When someone dies in the family it takes a while work through the grieving process. As part of that process you'll dream about your mother but eventually those dreams will fade.
When you dream of your dead mother, you may wonder whether you are actually making contact with her spirit. Many people believe this is possible. If you feel this, then look at the dream and ask yourself whether your mother has some message for you. Or perhaps she wants to continue some part of your relationship with her that was interrupted by her death.
Were there any unresolved feelings left over after she died? Anything you wanted to tell her or ask her? If the dream was unpleasant, then it may have to do with negative experiences with your mother that you never quite resolved. Dreaming about your mother can help you work through such feelings, so there is no harm in thinking that the dream figure is "really" your dead mother. But you can also see the dream as symbolic of your "inner mother."
Maybe you are in need of some mothering or mother's love now, and this inner strength within you is coming forth in the dream.
See the link below for more examples and discussion of dreams about deceased loved ones.
This dream seems to express your actual experience: your mother-in-law came into your life (with marriage) then she was gone (when she died.) The emotions felt during the dream itself might add more significance, as the dream could be part of the grieving process.
unresolved issues about her
This dream reflects the dreamer's feelings about her mother. It seems that the dreamer might fear her mother does not trust her, or perhaps that her mother is overly eager for grandchildren.
to dream of her is supposed to be really good but it all depends on how you saw your dream
The dream suggests that the dreamer realizes the mother is overwhelmed in some way.
This is a comforting dream reflecting your mother's love that continues to bless you from beyond the limits of this life.
Being very tall suggests authority or influence. This dream suggests that the mother is viewed as having great authority.
The dream suggests that you feel that you are carrying responsibility for your child without help from the mother. The mother seems to have no influence in the child's life, as ifshe were no longer alive.
This dream expresses your own sense of comfort and security. You feel confident and aware of your self-worth.
Their is major misunderstanding between you. Have good will and be accommodative. no dream will matter in life.
This suggests that the dreamer is coming to accept the reality of that person's death.
it means his feelings for u are weakening .....