I have actually seen a role that lets you remove yourself from the game and come back but it's in an ongoing game on another site and the player is still alive so I don't want to discuss that player or that game in particular because if anyone from that game saw our speculation here it could influence their opinion one way or the other.
But there are some roles that involve leaving the game on the wiki so I think I can point to those:
http://wiki.mafiascum.net/index.php?title=Commuter -- a player who leaves the game during the night and thus cannot be nightkilled or investigated by cops or protected by a doctor or anything because they're not in town. A player might only be able to do this a few times so they may have to pick which nights to do that. I would expect Aestrix to have returned by now if that were just what was going on.
The other role is not on the wiki but the player can leave the game during the day and returns later on (usually on the next day), again only being able to do it a few times.
If Aestrix had either of those roles exactly she'd be back by now, but the mods could easily have made up their own variation and so I think it is worth hoping she'll come back to us at some point but I don't know if there's anything we can do to make that happen or how likely it is.
sorry Kappa we can talk about other things now.
let's talk about eggs
they have no legs
chickens come from eggs
but they have legs
the plot thickens
eggs come from chickens
but have no legs under em
what a conondrum
