My wife removed her rings in Sept 05. She said she didn't know if or when she would put them on. We both screwed up in 05, but mine was the worse by far. I had forgiven her, but she doesn't like to deal with problems. This is her second marriage.
Her parents didn't know we were having problems, and put the rings on before she went to visit. I asked if she is going to keep them on when she returns, and she said she didn't know.
I plan to file for D this month if we (her) don't start making some kind of progress in being a couple again.
Short answer, if it's important to you that she wears the ring, confront her with it. Let her know that it's up to her that she wears it or not, but let her know what that it's a sign that the M is over.
