I've found a loose end in one of the Telvanni mods that I can't seem to tie up, most likely Rise of House Telvanni v1.52, but I'm not 100% sure. It could also be Building Up Uvirith's Legacy.

A Khajiit attacked me in Tel Uvirith lower tower, and left a used potion of recall on his corpse that I'm supposed to take to my alchemist (Menas, I think) and see what she can make of it. But I can't find any dialogue topics that seem to relate to it. There's lots on Daedra and the various kinds of potions and ingredients, but nothing about an assassin or a used potion of recall that I can see. It feels like I've gone through and clicked all the options available, but I may have missed something.

Can anyone tell me what the dialogue option should be appearing for this, and if necessary how to force the game to show it?

Thanks!

You should get it from talking to Gorven Menas after receiving the journal entry saying you've been attacked and with the used recall potion in your inventory

(1) Subsequently talking to Gorven Menas should prompt a greeting mentioning the potion and adding the topic "used recall potion"

(2) clicking on said topic should complete the quest

The ONLY thing I can think of that might be inhibiting the process is if you're playing with Building Up Uvirith's Legacy installed and have NOT yet completed either or both of (1) the silt strider platform or (2) the mining office. The reason why this may create a problem is that BUUL adds greetings to npcs within the Tel Uvirith cell if you have not yet built those structures asking you to build them. These greetings take priority over most other greetings in other Tel Uvirith mods (except those added by Uvirith's Legacy, which use more sophisicated filtering to prevent things like this from happening).

You may also be using the LGNPC Tel Uvirith AND LGNPC Tel Uvirith_UI mods at the same time (you're only supposed to use one depending on which other Tel Uvirith-related mods you're using). I know that can create problems too.

Other than that, I can't think of what might be causing the problem.