Sally was Jane's cellmate in "Speedtrapped", who intimidates Jane into giving her a tattoo replica of a Jasper Johns painting. In the end, Jane pressures Sally to back off - "How's it gonna be my art, sister, if you're dictating the medium of expression?" - and the two end up discussing art on Mars.
It turns out when she's released that she's the wife of the local judge and had been arrested for chasing him with a skillet. When the officer asks if she can not do this again, she replies: "Well, that depends. You think you can come out and stop him from saying or doing something stupid first?
Sally was voiced by Karen Disher.