New character, she's a teacher in the school, drop your intelligence below 50 (easiest way is sucking off the TA by interacting with the papers on the teacher's desk in the school) and talk with her to trigger her scene.
The scripting error is because the new effect of the MREA badge is to add an extra level of "risk" when working jobs (so jobs with low risk become medium risk, so on so forth) if you work the most dangerous tier of job (the schwarzy tier) the game doesn't know what to do because you are already at the highest risk level they programmed, just work the gorilla tier instead and there won't be an error and you can trigger the Sally scene randomly.
The bottom row in page 9 are just placeholders, the are no scenes tied to them.