Dazzler vs. Sentry

Dazzler can likely pump up the jam and turn the sun blue and kill the Sentry forever.
It would be faster than he can think and he'd die.
Or she could absorb all the sound from the Voices a schizophrenic hears and trap him in a permanent fake light world.
Or she could destroy the fake voices he hear with fake light and heal schizophrenia and Sentry's life.

vs.

Dazzler also may be able to absorb the sound waves of radio active decay and of gravitational waves to become far more powerful.