Re your wedding photos - I would say she has some private sentiment about it because she has them up but only where she can get use out of them. There are definately some feelings or she wouldn't have them up, but to what level I don't know.
When I split up I destroyed half my wedding photos even though I love my H - I was so hurt and depressed I just ripped them up. He took the album off me and begged me not to because it was 'memory'.
He got all the ones which weren't destroyed and has them at his house. I still won't have any here because it hurts to look at them. He keeps them hidden away (we had two huge wall portraits of us on our wedding day and they are behind his sofa) but in the last few months since we started dating, he has been looking at them with DD1 because he told me one day he was showing her the pictures and she said
'Dad, you look really different then, like you were young, but mum, she still looks young the same as then!'
Then he winked at me and told me I look like a 12 year old, and that was how I found out he'd progressed to looking at the pictures.
If your W is quite a hard type of person I would say it doesn't mean much. If she isn't, then that's definite sentiment.
Don't mention it when you see her, though, as that would put her off.