Demure, sweet, and really quite a pretty young woman,  she is not stunningly gorgeous.  Pale skin delicate as rose tinted porcelain and large grey eyes are her most notable features, while her hair is merely a soft and warm brunette often worn down and loose about her shoulders.  She carries herself with the stoic calm of someone far, far older than her appearance would suggest and often regards the world with a gentle wistfulness..
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Those who are specifically attuned to Death, Celestials/holy spirits, or the Underworld will recognize Sephone as an angel of death.  Not -THE- Angel, but a minor celestial in a certain line of holy work. .  
-She does not bear wings.  True Seeing will not find them, she does not have them.
-She doesn't glow, glimmer, shimmer, float, fly or otherwise appear shiny and divine. (Or unholy for that matter. She is as she looks.)
-She is alignment: True Neutral as death should be.
--More details will be noted as her character develops.


OPTIONAL::  Depending on your character's personal thoughts and feelings on death,  they might feel strangely around Seph.
Examples include (but are not limited to):
peaceful
nervous
safe
hateful
relieved
sad
hopeful

 
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~Echo-Christina Rossetti~
Come to me in the silence of the night;
Come in the speaking silence of a dream;
Come with soft rounded cheeks and eyes as bright
As sunlight on a stream;
Come back in tears,
O memory, hope, love of finished years.

O dream how sweet, too sweet, too bitter sweet,
Whose wakening should have been in Paradise,
Where souls brimfull of love abide and meet;
Where thirsting longing eyes
Watch the slow door
That opening, letting in, lets out no more.

Yet come to me in dreams, that I may live
My very life again though cold in death:
Come back to me in dreams, that I may give
Pulse for pulse, breath for breath:
Speak low, lean low
As long ago, my love, how long ago.