I think you may be referring to The Darkest Hour (Before the Dawn) by Erin Klingler. If I'm wrong this is still a great story so you should really check it out.  Avia
"I get it, you're a ghost. You're dead. Big accomplishment, move on. You see a light anywhere? Go towards it okay?"
Cordelia in 'Rm w/a Vu' - Angel episode 1x05
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