You can try to replicate the bug with the save I gave you. If you load the save, click the door, but click again immediately (once the "cinematic sequence" starts), it will cancel the event, you will never meet Skuda and she will remain hidden. Basically, there are two types of conversations - normal, that can be canceled anytime and "cinematic" that cannot be canceled and must be played through. The first conv. with Skuda should be the cinematic type but was incorrectly defined as normal.