OP here: I AM SO HAPPY! Oh Anon, you are amazing! You could keep writing this fic forever and I would never tire of it - in fact if I ever win the lottery I'm going to hire you to write weekly installments for the next thirty years, at least! I never dreamed when I posted the original prompt that it would lead to such deliciousness, written so beautifully. THANK YOU THANK YOU THANK YOU!!!!