how do i get Dermin Courtierdale to spawn?

Qayin

heya
ive been following this"
http://www.sorcerers.net/Games/BG2/Walkthrough2/SoA/chapter-2/quests/harper-hold-quests.php
during step four (4) i had a reputation of 15, so Reviane attacked me, that happened at the druids cove entrance.

important notes is i don't, as far as i can tell, have a romance with Jaheira, the moment i finished the first dungeon (when imoen was kidnapped) i asked Jaheira to leave the party, and after finishing about 90% of the quests in act 2 (including xzar), i asked her to join me.
im still in chapter 2


moments later the quest continued up untill the point i mentioned above.

im not sure if im missing something that i SHOULD have done or is this really a bug.
or maybe im missunderstanding something?

ive been traveling for around 12 ingame days... sleeping outside and in the streets of the city so far no go.

help please?

ty!

Tarlugn

I don´t know the specifics, but to me Dermien appeared when I entered the De´Arnise Keep for the first time to do the Nalia´s quest. Weird, but before that I encountered a party of Harpers in Trademeet, when I was leaving for De´Arnise Keep, and that event too didn´t happen the last time I played chapter 2 with another character while having Jaheira in the party - I don´t know for sure, but I have a hunch that these events are related somehow, though now that I try to remember how I did it, I stalled the first encounter with Galvarey´s party in the Harper Hold for long enough time to make Jaheira complain about it at least two times...