Im a little slow tonight...
It looks like you had it going pretty well, but just fumbled the ball...
In short... She is coming out of a very long relationship, and it will take a long time before she will trust someone else. You telling her your feelings was a disaster for a girl like this because it scared her which is exactly what she does not need right now...
My advice would be to just concentrate on listening to her and being a good friend. Good relationships always start with a good friendship first. For now, I would just concentrate on this and start dating someone else...