<span class="text-dst" <that's="" great,="" my="" friend. <="" span=""></span>
That's great, my friend.
I think I found her.
This is really a tedious thing.
It is, there are some parts of the game that are just like that (mostly achievement related), but once you know how to do it, it's a quick thing. This is the only Mouth Fiend I know of, as her scenes show up in the "Pervert" menu option under "Mouth Fiend" assuming you haven't already done it, do it on Ironman mode for the extra bonus point.