Link follows her with an air of faint puzzlement, until suddenly she's somehow liquified one of the guard rails, and is...shaping it? Moulding it? He has no understanding or context for what is happening.

But he's fascinated. He comes right over to where she's working - possibly a little too close - and just watches.

There's nothing that he says while all of this is going on, but the intense interest about what's happening still speaks volumes.