I still can't, after the many posts I've made on the subject, get my head round him not wanting to fuck her. Aiden is a 17-18 heterosexual lad, who's also a nasty piece of work. Ask yourself what men want & what they think about every minute of every day, especially when they're young. What thought appeared in the head of every hetero student the first day that Sophia walked into the class, assuming realism was present?
Now, Aiden has some power over a beautiful, sophisticated older woman. It's a fantasy come true, regardless, or perhaps because of, the evil methods he employs. If he didn't want to fuck her, he would, IMO, be one of the strangest hetero male characters in any game I've ever played. That he does want to do more than just have her obey him in a robot-like manner has already been shown in task 3.
Folks, it's easy & has been referred to in several posts. If you don't like coercion & blackmail in your games, just hit the delete button as recommended above, or use the get-out option associated with task 4. If you decide to stay, expect things to escalate & don't feel guilty about the choice. Sophia will get some enjoyment from the tasks, unlike the situation in some other games. As I've said before, I read murder mysteries but I don't think it makes me admire or wish to emulate the perpetrator.
I don't like a lot of things in games or stories. If it becomes too much, I stop playing, or find a way round them as I do with the incest in AWAM. Alternatively, I just ignore it & play forward.