At first I read the accounts and the burrito excuse and was like: oh that is terrible, poor girl.
But honestly, naturally occuring levels of this steroid are 0.5-1ng/ml. She tested at 5mg/ml. This is not trace amount. This is 5 times the normal level. There is NO WAY this can get in your system by accidental contamination.
I am on the fence but leaning towards guilty. Her rise to running stardom would coincide very well with microdosing steroids to get stronger.
However I think the Doping agencys should make real life tests of these type of naturally occuring levels after eating certain meats to sample the statistical fluctuations that can occur in it.
As a statistician this is the issue here: If we say 0.5-1ng/ml is the normal range then this is an average. What you need to know is where 99.5% of all naturally occuring datapoints fall. To sample this range properly you need to have a good statistical sample as a baseline. I think there can be really rigorous statistics and tests to avoid wrong convictions.