A nice short dungeon crawl, but the encounters seemed pretty underwhelming for tier 3. If you add in some better-scaled theme-appropriate monsters into the encounters, it has the potential to be more encgaging. Even using the strong and very strong adjustments, my players had no trouble with it. I would recommend giving the boss character stronger minions.

It also seems weird that Seer got kidnapped in the first place, considering that she's supposed to be some Elminster-level character.