There could be some bias coming from the career paths these individuals are coming from. We can't know because she doesn't elaborate on her industry, but here's

There could be some bias coming from the career paths these individuals are coming from. We can't know because she doesn't elaborate on her industry, but here's an example which would produce this kind of bias naturally: If she employs engineers (or some other equivalent), there's a good chance they will provide little issues as they tend to be better-educated and more stable than average. They are also predominately male. Other office jobs are a mixed bag and tend to employ average individuals, with a variety of education levels and backgrounds. This is often 50/50 or sometimes predominately female, such as in HR. In that case, it would be more accurately comparing average vs. unusually well-educated individuals. Gender would only be proportional to this because of her specific business case.