ACHI CHOKYI DROLMA

 Mother Achi was the great grandmother of Lord Jigton Sumgon, founder of the Drikung Lineage. To this day she remains a great dharma protector of the Buddha's teachings. Although Achi has a particular committment to protect the Drikung Kagyu, she is recognized and practiced by all lineages of Tibetan Buddhism.

She is the emanation of Vajra Yogini who is the embodiment of the wisdom and compassion of all the Buddhas. She is the divine mother of the Buddhas and manifested out of compassion in the form of the Dakinis of the Five Buddha families. To benefit the beings in samsara, she displays a limitless number of manifestations at different times and in different space dimensions.

At the time of her death, Achi Chokyi Drolma did not pass away in an ordinary manner. She first took her disciples to a huge cave where many sacred and secret items were discovered. Then she offered a tsok feast, and those who partook of that feast achieved many sublime qualities of the Buddhas. Then Mother Achi composed a text containing a sadhana of herself and promised to look after the teachings of the Buddha in general and to protect the essence of the Buddha's teaching that will appear in the future.

With that she said, “My activities through this body have come to an end,” and she flew up to the Buddha Field on her blue horse without leaving her body.
more information from RigDzin Dharma 

Achi Drolma information on khandro.net