Loki goes instantly where Huan tells her. She has a safety against landing intersected with solid objects, her or any of her belongings, so dramatic as it would be she can't just appear with her opponent already impaled. She has to actually stab him.
So she stabs him, spikes him from there. And hollows out Lævateinn and channels ice into the wound.
Maedhros wrote it and it's short and very reasonable. Unless he is planting magical items in corners when no one's looking I don't think there'd be a problem. Well. I'm not going to prosecute decency laws.
I suppose that'd be a more efficient avenue to an answer, wouldn't it? I don't think he desires to have conversations with me even with an intermediary.