You are clearly not a woman, nor do you remotely understand women. Until you do, I do not think you are in any position to judge what is and is not 'realistic' when it comes to a story focussing on a young woman's struggle with gender identity.
~Liz.
Right... like only women have insecurities or are trans. In fact, she is a futa not even trans, her insecurity is not about gender identity, that's not really part of the story, it's about the penis itself. Tons of women have penis envy and would love to be able to stick a dick into another woman. It's understandable to be worried about surprising a potentially homophobic male partner with a penis, but overall when dealing with other women, being beautiful and having a penis is a source of power, confidence, and attraction.
PS: If you're mtf and are worried about passing when you potentially look male, then this comment is not for you. This is not the situation Jenny is in, she is a beautiful woman with a penis.