I'm here on velvetwhip's rec, and I'm glad I followed it. I love how Buffy's growing up was measured by how the tea grew on her. And I love the mirroring at the end:

Giles gives her a wan smile and parrots her words back to her from that first time he made her tea. “Is it supposed to be a comfort for me or for you?”

Buffy smiles softly back at him, passing him the cookies. “For you. Always for you.”

This made me sigh, in a happy/sad way.