[quote=@Draconfound]
Does time flow normally in this land of the dead? I was thinking of my character maybe being somebody who died in modern times, but somehow ended up in an area of this "hell" where the others are. She wouldn't have any modern items, like a gun or phone, but she would understand most modern concepts.
[/quote]

Abnormally in relation to the the land of the living, but it's kind of like a closed bubble, so there would be no point of reference to measure it against. 
I had mostly envisioned the world that runs parallel to be a sword-and-shield fantasy world, but what 'modern concepts' to you refer to?