So... Stuck at 17 out of 18 influence... Quest log says to show Sally the ropes by giving a demonstration. However the hints say that I need to finish Miss Potts - Tender training for the last point. I have completed all of Miss Potts quests objectives though, and when I try teach a sports class on Thursdays, I just get Rachel asking to jerk me off, and no option for a demonstration for either class.