Called Back
Death's false alarm
She thought she was dying ('saved' = going to heaven) but got yanked back to life. The 'disappointed tide' is death itself, receding like a wave that didn't claim her.
Near-death authority
She's claiming expertise from almost dying—like a sailor who's seen foreign lands or a reporter who got past heaven's doors. The 'seal' suggests secrets officially witnessed.
Sensory reversal
Death inverts the senses—you'll hear what was never heard, see what was never scrutinized. She's describing the afterlife's perceptual rules.
Geological patience
In death, she'll watch time from outside it—centuries marching past like soldiers, cosmic cycles turning. 'Tarry' means to linger, to stay and observe.