[quote=@Blackstripe]
after they've been purified, they'll be reincarnated into a new body somewhere in the universe, and then you can obviously no longer converse with them since they're alive again. 

Now, that's how it [b]normally[/b] works. But if a person has "unfinished business", or something that strong ties them to the world, they can continue to linger on as a spirit. I imagine that's what happened with your character's witch friend.
[/quote]

Without the incarnation, this is largely what I had assumed, it's good to know the varying time limits, could make things interesting. I'll mention something about the constriction in the CS, is there anything else about it that needs changing?