They might have given her a substance like a food supplement that produces a similar reaction but it does it in minimal quantities. That's why it was never identified before or after. The intentional wrongdoing would be giving her Preductal - the name of a drug that one can easily buy in a pharmacy. I am sure that they did not do it.
My principal belief, now that her Olympic test is negative, is that TT did not intentionally give her WADA forbidden substances. At the same time, I would agree that they gave her some substances. There is no high level sport without pharma these days - I wonder if someone will argue with that.