I really like your game game. The scene is good but I think it is not a good decision to make this scene unavoidable.
Basically, you're telling the developer that she made a poor life decision.
But, think about it, for a minute:
She was a teenager, at that time.
She'd been through a VERY traumatic event. Her long-time friend/recent 'boyfriend' acted like she wasn't even there, despite professing his 'love' for her on multiple occasions.
The boy's older brother, who obviously cared a great deal for her, looked after her in a genuinely caring way.
Yes, she was vulnerable, and indeed, Jacob could arguably have taken advantage. But, she was happy with the decision then, and she's telling us about it, now.
I think it's FASCINATING!
Another problem is that the scene is unrealistic because it is in public, . . .
Again, fact based stories are not always "realistic" . . .
If the dev made a poor decision, I would argue it was the decision to create a VN, rather than telling her story in a conventional novel. But, she's interested in computer programming, and there is little coding involved in typing out a novel to send to a publisher.