I did something similar. Life was getting a bit complicated for Marcus, so I decided to take a break & revisit an older game. The game took place, before I had any expansion packs. I don't know if that's why Lily became a barista, or not. In that game, I had the game fill empty houses, so I decided to play one that had taken up residence in the Umbrage Manor & was the town librarian, at one time. I kinda wanted to improve her skills a bit & bring her up to speed, since some of the other Sims had had some interactions with her.