I have often thought that Nesta’s power isn’t death

First, because Feyre is convinced it is death. And When has Feyre ever been known to truly get her sister?

Second, it was said at one point that Nesta took from the cauldron everything it had taken from her. It is assumed she got the death powers because it had killed her but in reality the cauldron was also giving her life, a new life.

Third, I think often because if Nesta’s bluntness and brutality in conversation it is thought that she is similar to death. But no we know she is sensitive and caring behind her outer wall. She is life and creation more than death and killing

Fourth, just because the bone carver heard of Nests dosent mean she is death. She could be deaths greatest enemy - life

Nesta is life she is creation she is a new beginning

Sometimes the shortest stick is the sharpest

And sometimes the only way out is as a carcass