Guru As Mother
The conception of a guru as mother is, in my opinion, by far the most appropriate and advantageous to a disciple. A mother is the very embodiment of love and affection. Only a mother's heart can bear with patience all troubles and miseries caused to her by her son, thinking all the while of trying to provide for her son's comfort and happiness. The same is the position of the real Master or Guru, who is the spiritual mother of the disciple. As such, the guru is always on the lookout for the spiritual welfare of the child, the disciple.
Taken from the book "Complete Works of Ram Chandra, Vol. 1 (1st Indian edn., 1989)", Chapter "Way to Realisation (Role of the Guide)", pg. 358, by Babuji Maharaj