"I suppose she would have been less traumatized. But that's not the kind of world any of us want, is it?"

Do I want a world where girls are expected to give blow jobs to men even if they feel no sexual desire for them? No.

Do I want a world where girls giving blow jobs to men under any circumstances (consensually or not) is less traumatic? Absolutely!

Denial of consent should always be a crime (where sex acts are concerned). But why does it have to be traumatic, too? It should be a crime because it's a denial of consent. It shouldn't be a crime because it's traumatic. In other words, the crime should be determined on a rational basis, and not an emotional one.

Why do you want kids to suffer trauma any more than they have to, unless it's because you have a personal stigma against sex acts and you want them to be traumatic to support your own personal opinion that they are distasteful?

That's called sex-negativity, and it is not the only possible formulation available. And I would argue that it creates a more dangerous society for all involved, than one in which we view sex acts from a more neutral perspective, let alone positive.