*possible spoilers*

Hey

So I've been having some problems with the "The murders in the Rue Lanilor" quest which seems to lead to clue II(of what I read on these forums).

I started the quest went into the 1st and 2nd room, found the piece of flesh or something, showed it to the woman there and went to doctor west as told. Now I started doing all kinds of other quests and totally forgot what West told me, the quest states:

Nasty Necrolysis
Doctor West informed me the piece of flesh comes from a "natural undead", a very rare type of creature, not seen in Aleroth for decades.

I don't know if he took the flesh? but its no longer in quest items as far as I can see.
Even doesn't give any additional options when talking to her now, neither do the guards of the 3rd room. Mindread them all > nothing.

What am I supposed to do now?

ps apologies if this is findable somewhere on the forum but I tried and didn't find anything resolving my issue.