Well she's not wrong...

I don't think so. We see blood, what, maybe one day out of thirty? Maybe 4 or 5 if you're involved in violent sports? And even then, it's, "Oh look I'm bleeding I should probably do something about it," five minutes later it's done. With girls, they're consistently shedding the linings of an internal organ for 7 days out of 30, sometimes more, and staring at it whenever they pee. I'm pretty sure that qualifies as "more blood."

Surgeons, interrogation specialists, combat troops.

Good point. However, only a small percentage of guys fall into that range, and all pre-menopause women menstruate, so it still averages out that they see more blood than we do.

"...some guys would see more blood than girls."

You do realize that women are also members of those types of jobs as well, right?

I never said those jobs were exclusive to men, only that men of those professions would see more blood than some girls.

That's true. But I think it's safe to say the majority of women will see more blood than the majority of men.

I never said that that wasn't the case.