99% of bike fatalities involve car crashes. There is no styrofoam helmet which will protect against that, and the VaTech test notably does not model that type of crash.
To my knowledge, the only group that tried to test bike helmets against a car is Volvo -- and all helmets failed.
My son took CS10 a couple years ago, and even I (Masters in EECS from UCB) struggled with some really obtuse multiple-guess questions he showed me on the homeworks. Much of the classwork is done in Snap, a weird and stupid graphical "programming" language. If 1/3 of the students are failing, that may have more to do with the professor.
IANAL but she could also have a good case that it will be impossible for her to get a fair trial.
Some potential jurors will have seen these doctored photos. With the prosecution putting out obviously false info then it calls into question their credibility and any other evidence presented at trial.
Here are 2017 numbers (ok...only 96% that year). https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/...