While working on Achi’s dice divination text I found a few lines in the collected works of Jigten Sumgön where he points out the true nature of Achi. The vital point that he makes here is that Achi is not some kind of demoness that has been turned into a protectress by subduing her and binding her to an oath. Instead, she is an awakened Vajra-Dakini from the very beginning.
Now I am going to explain the Lady Dakini:
The mother, the Dakini “Lady of the Sphere,”
walks in the skies and tames the malevolent ones,
she protects the yogis who do not transgress their pledges.
She is more kind than a mother and more affectionate than a sister.(1)
She is pleasing like a mistress.
She is a Vajra-Dakini!
Although [phenomena?] are not [really] existent, she [shows illusory] play.(2)
She, whose mind is beyond conception and expression,
is the consort of all Victors of the three times
and the mother of the bodhisattvas.
She s drawing forth the shravakas and pratyekabuddhas
and she is the source of all bliss and happiness, the supreme mother.(3)
She is the supreme Dakini-Lady!
Everything appears in the space of the nature of the mind
through the power of the absence of any appearing and disappearing.
She is the Vajra-Dakini!
Thus, Viras, Dakinis, and my son,
never separate [from her] even for a moment!
1. gdung, read dungs?
2. med kyang ku re bgyis pa lags, a very terse expression that I render here freely.
3. Her follow two lines that remain unclear to me. They may refer to the way she is wearing her dress (a phyi chen mo sham sham mo// yang phyi chen mo ‘jol ‘jol mo//).
Jigten Sumgön, Colleted Works, vol. 5, text no. 528: