This is a thread about troubleshooting morrowind mod incompatibilities and errors. It's a trial and error process. This should help newbs. I'm a newb by the way. This will also help modders. Please go down to the bolded section if you know how to troubleshoot incompatibilities and don't wanna read my jolly good time. NOTE: all abbreviations are mod name. Example of abbreviation: lol is laughing aloud.

Her dialogue is screwed up. I thought maybe it was LGNPC mods (edit the dialogue across the game) and so I saved near her, turned them all off, opened save, and talked to her. She still doesn't see me.
(only dialogue is: "Who's there?" as if I'm invisible or she is blind).

So it looks like it's not the LGNPC mods.

The only other mods I've recently installed are, well, kind of big. Starfire's NPC addition, faarp weapon compilation mod v2, RoHT, UL, and BUUL.

Turned starfire's off, and weapon compilation mod off. Still dialogue error.

Trying RoHT, UL, and BUUL now.

FIXED!!!!

Now trying to boil it down... UL & ROHT, or BUUL?

first thing's first: leaving UL off (because it is the NEWEST updated release of the three. Makes sense).

Error.

Turning UL and BUUL on. Turning off RoHT.

FIXED.
RoHT is the problem.
It's noobing me out.

ill be back later. RoHT is like pure alcohol, it causes Janand Maulinie to be blind. ill have to tell RoHT modders if they're still alive.
Does Rise of House Telvanni cause an error in your game as well for this character?

The greeting you're discussing can occur in three possible scenarios:

(1) your PC is invisible while attempting to talk to the NPC, per the spell

(2) your PC is invisible while attempting to talk to the NPC either because (a) your PC is "sneaking" or ( or your PC is under the effects of a Chameleon spell

(3) there is an object between your PC and the NPC that blocks the NPC's line of sight to your PC. This can be as small as another NPC or static in the environment, even if it doesn't appear to block your PC's view (i.e. hanging vines; a child from children of Morrowind)

Are you sure none of these are the problem? Was there a child from Children of Morrowind in between your PC and the NPC when you were trying to talk to her? To my knowledge, the only alteration ROhT makes to Janand Maulinie is to disable her if you decide to destroy the Mages Guild when playing through the ROhT questline. Note that even if you have only 5% chameleon it can prevent an NPC from being able to see you depending on the dice role.

1. I'm a beginner with no spells.

2. I don't have COM.
3. I'm not sneaking.

4. RoHT on - she can't see me, off - she can see me.

Also, it alters dialogue. I know because it was one of the errors I had to accept to continue running the script when I loaded my save. (: That is where the error lies. RoHT.

Sounds like we were both wrong. In your other post someone sent you a link to an old thread. Turns out this is the issue:

I don't have the newest version of the MPP, which is why I wasn't getting the error.

also the RoHT thread says 1.6.5d is the fix. I'm waiting for confirmation before I install and test it. I'll do Stuporstar's manual fix if 1.6.5d doesn't solve it by itself.

Also I was, maybe, half wrong.
RoHT IS causing the error.

But it's not RoHT by itself... it's an incompatibility between RoHT and the MPP 1.6.5 BTB edit ( b ).