Like I said on plurk, I'm down for putting Lucy on board for this! Elfen Lied has a lot of blood and gore, so that doesn't bother me. Also, since Koltira is not human, he would be able to see Lucy's vectors/invisible arms, but she won't know this at first.

I also have to wonder, would it be possible for them to meet again afterward, but with Nyuu in control? Because Nyuu just became aware of Lucy in her canon and she's devastated by the thought of her having killed people, so it's been eating away at her mind and she hasn't talked about it with anyone. Just a heads up that Nyuu won't remember the fight unless Koltira tells her what happened, though.