No, her stats are very good, especially for a woman. I know virtually nothing about running, but I know that a 9 minute per mile pace is really good for distance running. So his question really made no sense at all.

The only explanation I can think of is that most adults wouldn't post their pre-marathon practice run to Twitter. That's a super amateurish thing to do, more befitting of a young girl who got into running for the attention than a serious runner. And since this woman is clearly into doing things for attention, it's not a bad assumption to make.