Damn. I don't speak or read Russian (apologies if the language is actually something other than Russian), and can't read the fic. Am I understanding the description correctly - the Thieves Guild is trying to steal the Nightmother's Coffin for a client or something? Baaaad idea guys. lol.
Wow. Whomever hired the Thieves Guild to steal the Nightmother's coffin must have offered them an astronomical amount of gold. Thieves Guild works with and respects the Dark Brotherhood so they would not take that sort of job very easily.