The bond between child and mother is one of the strongest.  You know each other at a cellular level.  Love or hate each other for your human ways, it matters not—you are connected by that cord that at one time fed you and once cut continues to connect you energetically.  You will spend your lives in that oh-so-human dance to return to the oneness of the womb.  It was not completely peaceful in there, but the soul at that time knew only love.  Forgive the mother-child dynamics in human form.  They are temporary.  The mother-child dynamics without all of the human drama teach you about eternal love.  Whether mother is on the other side or child is, that energetic bond continues to connect you and teach you about love which can never be severed.