Mipha only notes their departure from her peripheral, not consciously aware through her focus on Link. She wants to say how much she'd wanted him to use it, how much it meant to her that her family could part with what is essentially a piece of her...

But she knows if it were the opposite, she couldn't bear to wear down Link's weapons when they would be the only thing left.

She closes her eyes, taking her unoccupied hands and laying them over his arm, leaving the past and what-if thoughts unspoken. Instead, she takes up his mantle of being left speechless with emotion until finally, she opens her eyes and looks into his again. "...I suppose you have something better than that, now."