[Raynor]

My last post was intended to be a reply to The Might's; indeed, I don't think that Yavanna, Feanor, or Celebrimbor had a connection to their works similar to Sauron's.

As for Yavanna asking Feanor to give the silmarils, knowing that it might kill him... Hm, seeing that both Elrond and Gandalf would send the hobbits in a quest that most likely means their death, I would dare say she would ask such a thing, because it serves a higher cause than both of them.