Can the Valar Sentence People to Death?

[Eomer of the Rohirrim]

Originally Posted by Galadriel

I think, since banishing the Noldor led to their death, why should the Valar stop there?

Okay, forget that. What if Eru came and said, "Do what you want with him." Not that he'd actually say that, or he'd say it very differently, but what then?

Are you saying the Valar effectively killed those Noldor? That's going way too far, if you ask me!