That moment when Sarah accidentally attained maximum affinity with Grace.
I consider it a mistake on my part that a sequence like this didn't take place during The Secret Of Sam. Throughout that storyline, Grace emphasized Sarah's importance to her, and in my mind, I repeatedly thought back to this specific moment of Sarah accepting Grace, and how much it mattered to her.
At the time, it didn't occur to me that I needed to specifically point out that moment. Now, I feel like I was expecting everyone to get on the same page after having been given a vague hint to find it, and it feels like it should have been obvious to show something like this.
Anyway, clarity in hindsight, yadda yadda yadda, HERE'S SARAH AS AN ANGEL PRINCESS ON A PEDESTAL.