The Ch6 Hotel Dark scene variant
can only be viewed via one of two ways which I fully explained in the SanchoMod thread
here. If you are seeking to see that scene then I laid out a wall of text that explains it all in detail. Just having Liv's Dark sub path alone is not enough to view the scene, FYI.
Additionally I just updated the mod to include more elaborate detail in its ChoiceGuide to direct the Player in regards to either an LI's main Relp Path and/or their associated Dark sub paths. So, you have many ways to get the info you are asking I reckon, pick your favorite and enjoy.