What I was referring to in that paragraph wasn't the story generally, but specifically her relationship with Ian. She's not repressed in the relationship, but her sexual side is very lukewarm or "vanilla" with the guy, which isn't the case at all with her other relationships. She experiences her deeper, darker desires more freely and genuinely with other characters, which I suspect, from a literary standpoint, she'd feel embarrassed or anxious to disclose or mention or experience intimately with Ian. By not having that sort of experience with Ian (the point that I made about living without inhibitions), what we get is a sort of Disney-styled, surface-level romance where the sex is concerned.I just don't feel like this is reflected in the story at all, at least not in all the paths. In my playthrough Lena doesn't seem sexually repressed at all, if anything she seems quite confident in pursuing the desires that's set for her by my choices and she'll even compliment her own masturbation as satisfactory.
In my playthrough Lena only ever fantasized about Holly and the only time her sexual submissivness has come up she had no problem literally burning it away, hell, it even gave her a willpower point to oppose her submissive past. Lena's behaviour forms according to the relationships and opportunities she gains, for example with the Seymour photosoots where letting him have control or not will cost willpower depending on the opinion you allow Lena to have for him.