A lot of men, probably most of us, go through phases where we feel like we’re less of a man. It’s not just because we don’t feel like proper males, but also somethings we feel like we’re not mature enough to be proper adults, or like we're not human enough. In fact, part of the reason gay men have been treated by homophobic people as "lessor men" is because homophobes don’t see us as human beings. Instead, they see us as mindless, sex addicted animals who need to be tamed and castrated, or to be hunted down.

However, in this woman’s case, her insecurities stem from the fact that she’s not a man at all, because she’s not male. Yes, she’s a human being. And she’s also adult, at least physically she’s an adult, assuming she has reached the age of 18. But she’s still not a male. So even if she was attracted to women, she still would not be a man. And a part of her knows this.