I would like to opt out of any non-con/dub-con behaviors for Eowyn. She has known issues with that, and I don't want to put her through more of it.

For Nikita, well, he can give it a shot, but there's a good chance he'll end up writhing on the ground in pain. And she won't hesitate to do it, either, as men in her canon have discovered rather painfully. I'm okay with that if you're okay with that.