“Traditionally, the term dakini has been used for outstanding female practitioners, consorts of great masters, and to denote the enlightened female principle of nonduality which transcends gender,” Khandro Rinpoche, whose very name literally means “precious dakini,” points out. Khandro Rinpoche defines the authentic dakini principle as “a very sharp, brilliant wisdom mind that is uncompromising, honest, with a little bit of wrath. To really meet the dakini, you have to go beyond duality,” Khandro Rinpoche teaches, referring to an essential principle in Vajrayana that the absolute reality cannot be grasped intellectually.
http://www.dakinipower.com/jetsun-khandro-rinpoche/