i think the goblin said that the drow had the touch of the absolute because she walked in the sun which drow tendentially dont do.
The same is true for the vampire spawn.
I think the goblin simply recognized the mindflayer parasite, opposed to the drow beeing part of that cult.
I am pretty sure the goblin chooses not to attack her because she's a drow specifically, without her using the tadpole. Which would seem to hint the drow play a role in these parts for some reasons.
