Her heart’s been broken too many times. She needs someone to meet her halfway.
And he has gone beyond halfway.
Without either of them knowing it, he’s dug deep into her heart, so far in that she finds the words are easy to say. . . .
I believe in you, Spike.
Yes, she's come a long way from that hilltop in Amends and been and seen too many things to react in the same fashion even if she still can't kill the vampire in front of her.