I have discovered that K. in her Astral form can utilize the abilities of captured ghosts. If I capture enough she is able to channel their strengths.
When using a ghost's abilities she will drain my reserves of ghost energy. So an ability can only be used for a finite time.
So far I have only experimented with Revenants. Using their energy she can manifest herself in solid form. Operating switches and shifting objects by dropping from a height upon them.
I plan to use it on those lifts that are constantly malfunctioning.