Yes the mod should definitely be installed. It is unpacked in my BG2 root directory and listed in my WEIDU.log as well. I did search for normals strings still didnt found them. I have two different dialog.tlk's in my folder though, one in english and a bigger one apparently in german. Near Infinity is accessing the english one by default.
@Sandrah: I'll test your recommendations later and will report my progress
Thank you all for hints, I dont wanna drop Jaheira at all