I think this is the closest I've seen this artist get to wholesome. She went on a date (for money), enjoyed herself, and then couldn't say no when her date got aggressive. He was hardly a gentlemen about it (which some girls like), but he escalated it several times and she did nothing. Then she went back to see him on a dangerous day and gave token resistance before agreeing to be impregnated.
I'm hardly fluent in Japanese, but I noticed that she frequently used much harsher language in her head. Like, the ojisan called her his woman, and in her head she said 'that's right, I'm ojisan's hole now'. I thought it was a nice touch that resonated with the rest of her actions.
Ignoring the age disparity, I'd say she's halfway responsible for not resisting her toxic personal fantasies.