I would say the most challenging thing is getting excited about things that don't happen. Like, telling myself, "It's going to be so awesome when characters push Sentience about topic X!" or "When she keeps arguing Sentience will give in!" but the players don't go along. This is a problem for all characters, of course, but moreso with Sentience because A) these might be plot-relevant things that then I need to find some other way to make that happen, or B) because people think sometimes that Sentience's opinion is the same as the mod's verdict, and they don't commit to arguing fully. There's a big difference between Sentience saying "That's not the way I normally do things" and a mod saying "That can't happen".
What does Sasha think about the bar burning down? She wants to rebuild the bar, but does she have mixed feelings? What about Tyki in general?