Aww this was really sweet. I'm quite surprised it doesn't have any reviews...
I liked the way you explored Cho's previous relationships and what it had been like for her after the war, and what she had given up to be with William. You created a feeling of hopelessness nicely at the beginning.
The only thing is, I think it could have been a bit longer - perhaps you could have included when she met William or somehow developed that relationship more.
Still it was very cute and nicely written, good job :)