Snapedom

I think it also important to note that Lily's 'sacrifice' is NOT what actually saved Harry, Whatever her efforts or reasons, asking Voldy to kill her instead of Harry wouldn't have made any difference if Voldy was going to AK him. The difference came from Voldy - in the genuine offer to allow her to live - which we all know comes from Sev asking Voldy to spare her.

And Lily might truthfully feel that she doesn't WANT to live on if both her husband and child are dead. So, it really isn't so much a 'mother's sacrifice' as a mother trying her best to influence Voldy into leaving her baby alive (as he had apparently done for other children).

All in all, 'Saint Lily' never exists except in the statue in Godric's Hollow. So, Lily herself never actually changed into this 'being'. It is an ideal suggested by the ministry, something they felt the wizarding public would like to believe in.

And when have we ever seen a wizarding statue to 'ideals' that was truthful. Perhaps individual statues of individual people - but certainly not in statues built by the Ministry in honor of some ideal they hold - or rather that they prefer the wizarding public to believe. This goes hand-in-hand with Fudge (and even Scrimgoer) wishing to pacify the public by promoting ideas without basis in fact. -- Hwyla