I prefer to lurk but wow I have to say something:
I'm glad to see some people here with reasonable opinions. The ones freaking out over femdom don't seem bothered that MC practically raped Ophelia with his mouth!
So in an attempt to get over that violation she decides to flip the script and role-play her dom fantasy (which was heavily foreshadowed for those who bother to read) and *make* him perform oral on her, re-framing the activity from involuntary to allowed (required even!). Most of the critics in this thread don't seem to understand the plot or characters, but it's honestly brilliant writing, escalating their sexual relationship in an original way. What would you prefer, Ophelia just give in and become a docile obedient cock-hungry slut? We've got other characters for that role! This route allows her to keep some of what makes her exciting in the first place i.e. "the challenge".
Obviously this isn't Ophelia's true personality and she'll go back to normal once they've moved past this i.e. "evened the score." It's just a little give and take which is a normal part of sex. It's not like she's beating him, binding him, pegging him, etc. Being "forced" to eat a beautiful woman's pussy (after you've already voluntarily eaten said pussy) is hardly a punishment. Some day when you're older you might understand the expression "don't threaten me with a good time."