And her using her hand to "guide" Jamie into her has a little to do with it also.

You mean be sensitive like Tyrion was and not marry her.

I don't buy that for one bit. What you are describing is not murder, it's "defense action" killing. More people have it in them to rape than to go on offense and kill someone who is otherwise at peace with them. When you add in aggravating factors like mixed messages and alcohol it's far more.

What do you mean by "the consent isn't her responsibility"?

Actually, I never thought about that way. But in contemporary American culture we do conveniently pretend that this ("no" followed shortly by an excited "yes, yes, yes") never happens. It makes it so much easier to define whether a situation is rape or not when there are no mixed messages.

What do you expect, though. She was married off to someone with whom she did not speak a common language. It's not reasonable for her to expect to be able to avoid having sex with him on her wedding night.

"Jamie's interest in Cersei being interested"?????

You are conflating Cersei's individual ability to get and attain power with the ability of any woman in the G.O.T universe to get and attain power.