My W doesn't wear her wedding ring either. Infact, I'm not even sure that half of her friends know that she is married. Don't put to much thought into it. Just keep DBing and praying your heart out. Love her unconditionally. Forgive her and others that do you wrong daily. Ask the Lord to heal your marriage and speak to your W. It takes time. Right now you are still in the house with her. You have daily interaction. Each day you can look better and better. I would worry more if she leaves or forces you to leave the house.
Don't get caught up in the negative emotions. They will drive you insane. I know from personal experience.
Keep the faith. Ignore the ring. Work on you. How can you make today another good day? It sounds like the beach was good. How did the party end up being?
Kevin
Me 36, W 37 M: 08/02/97 D13, D9 1st Bomb 02/08 Reconciled 04/08 2nd Bomb: 09/08 W filed for D 02/04/09 Separated 03/09 D dismissed 06/09/09 Still separated...