Did Harry Notice?

[Carol]

No: HPFGUIDX 182952

Carol quoted earlier: 
> ES: This is one of my burning questions since the third book - why
did Voldemort offer Lily so many chances to live? Would he actually
have let her live?
> 
> JKR: Mmhm. [IOW, yes.]
> 
> ES: Why?
> 
> JKR: [silence] Can't tell you. But he did offer, you're absolutely
> right. Don't you want to ask me why James's death didn't protect
Lily and Harry? There's your answer, you've just answered your own
question, because *she could have lived and chose to die*. James was
> going to be killed anyway. <snip>

Carol earlier: 
> There you have it, in JKR's own words. Lily "could have lived and
chose to die." 

Carol again:
One more point regarding this quotation: Note what JKR "can't" (won't)
tell the questioner (Emerson Somebody): *Why* Voldemort would have let
Lily live. But we know now that the reason he would have let Lily live
is that Snape asked him to do so. And that bit of information is so
important that JKR "can't" tell it to the questioner. It would ruin
not only the Snape arc but the whole behind Lily's accidental love
magic. She, unlike James, had a choice to live or die because
Voldemort gave it to her. And Voldemort would not have given her that
chance if Snape had not requested it.

Carol, in no way denigrating the value of Lily's sacrifice even though
she had no idea why LV was offering her the chance to live and no idea
of the effects of her self-sacrifice (any more than Harry, when he
willingly sacrificed himself, knew that he would survive and his love
magic would work as Lily's did on a larger scale)