You can only see one event with them per day, so the first thing to try if they aren't doing anything would be to sleep at the bar and then return. The other requirement after a certain point is finishing the second dungeon, but the game should inform you at that point that you need to progress in the game to see more content. If that isn't working let me know, and I'll see if something is bugged.How do I met Daddy and sissy? I think I see them in the alley but I can't interact with them.