Future is but Past Forgotten

Waiting atop a funerary totem, she forces herself into a dignified pose that belies her sadness. In truth, she is far too young to be in such a final place. She won't start to feel the pangs of the death spiral for another 300 years. And yet it's no accident that she is here, for her own people left her here to be forgotten. All because her mind is quiet. To a species of telepaths, this is a thing to be feared. It stirs up ancient fears of a time when the solitude of thoughts cultivated horrors beyond belief. Their collective minds still hear the dark whispers of the unconscious that almost destroyed their race many millennia ago.

So whether it's out of fear, or something deeper and darker, they abolish one of their own kind because she is different from them. Much like how their oldest ancestors lynched others for no reason more than the color of their skin.