The goblins drag all the dead Tieflings into your camp and party there, Minthara demands to have sex with you and you get a check to read a vulnerability in her mind after the sex. If you pass this check, you learn that she is afraid of something. AFAIK if you fail, she tries to kill you right then and there. The next morning she tries to kill you (again...) which you can talk her out of and then she tells you of a "quite mad" person she knows who can navigate past the shadow curse in the mountains around Moonrise. This is when she buggers off out of the game, but not before telling you all the goblins are hostile to you from there on out because you were supposed to die. I find this last part very amusing because in almost every other outcome besides you passing all the checks I assume you are forced to kill Minthara before she gives up that information about the guy in the mountains and at no point do you feel like you gained an ally. The evil path is the path where you do something dumb and get backstabbed, but at least you get drow poon.