As one of the women regularly on this board , I'll just say (1) I think it's unlikely that any woman will find a rape scene funny and yes it's likely to be seen as offensive but (2) it's absolutely your right to include it if it's your vision of the movie.
Yes. This, exactly.
Earlier, I referenced how Tarantino was able to find some humor in rape. But that was revenge-rape of a man. So, first of all, getting medieval was revenge, and who doesn't enjoy fantasizing about revenge every now and then? But more importantly, the person who was threatened was a man.
Men don't live in fear of being raped. We don't live in fear of violence from the other gender. I'm not saying women walk around afraid all the time, but this is definitely a thing that women have to deal with on a near constant basis. Or, at least that's the best I can understand it, as it's been explained to me.
My point being, I just can't comprehend any way in which any scene involving rape of a woman could be even slightly humorous.
That being said, just as Mara pointed out above, you gotta stick to your vision of the movie. Unless, of course, anyone working with you introduces you to a better alternate idea.
In Antihero, I can think of one scene in particular, where many people who critiqued my script told me that the scene didn't belong and I needed to figure out some way to convey the same information. They made really logical arguments. In many other ways, my script revisions were very heavily influenced by the critiques of those close to me. But in this one regard, I felt like they just didn't get it. They just didn't see what was in my head.
I stuck to my guns and I'm glad I did. It turned out to be one of the better scenes in the movie.
So yes, you do you. Make the movie you see in your head. Don't make movies to please others. Make the movie that you would enjoy watching, and cross your fingers that other people might share your interests.
