Since you said it... "Uguu~"!
Just kidding.
I don't think this quote really spoils anything (but those who know the story would understand what it implies), so not going to use the spoiler tag. It's from the game, but I have a feeling she said it in the anime too. Too lazy to rewatch the whole thing to check though.
"Haru ga kite... zutto haru dattara ii no ni" (「春がきて・・・ずっと春だったらいいのに」) - by Makoto