This is lovely. Thank you for sharing!

That was so lovely, a mother seen through the eyes of her child. I love it that Nerdanel's strenght of character shows through her restraint, such a very important quality in a mother.

I like the sense of strength you convey in Nerdanel! She seems very much the immovable object to Feanor's unstoppable force. 

I liked these lines:

"He'd see her move around stone, lifting the chisel, then lowering it before taking a step back and squinting."

"...but she had furrowed her brow which she so often did around him, as if to tell him to think back a few steps before he did something rash and foolish."

They make it sound like Nerdanel is really someone who considers small details, and really thinks about all the consequences of an action, before and after.