Rivers will probably get lore about her arrival to the Tacos eventually, but for now, she's relevant several times over on the new-but-long-anticipated wormwolf Wanda Schenn IRM. (Wanda's talk page, where the full text can be found: https://www.blaseball.wiki/w/Talk:Wanda_Schenn)
- On Wanda's arrival to Chicago: "At the end of Season 13, NaN encountered Schenn, who (choose:was burning up with some unnatural, strangely fire-like fever|had apparently encountered some sort of demon in the depths of Ohio and was in a bad way, fire coursing through their veins). The Worms expressed concern about her, and NaN, for whom this was on their route, offered to take her to Chicago and see if anyone there could help. Rivers Rosa was the first to encounter them, and offered her assistance immediately(choose:.|, aware of the potential consequences.|, making a deal with Mx. Chicago to save Schenn's life from whatever this was.) As a result, Schenn was added to the Firefighters roster."
- On their time in Chicago: "Despite Rosa's role in Schenn's arrival to Chicago, in the short time when both were on the team before Rosa swapped with NaN (the same player Schenn was traded for), they did not talk much."
- But they reunited in Los Angeli: "Despite not having been close with Rosa in Chicago, Schenn and Rosa became friends in LA."
