No, I'm using risk analysis to conclude that the cost to me of accepting a job there if she's telling the truth is much higher than the opportunity cost of not taking the job (assuming I have other options) if her complaint turns out to be wrong.

Edited to add: the process of deciding the best action to take given uncertain information is fundamentally different from the process of trying to decide what is most likely to be true when there is nothing in particular at stake personally.