OP, it seems in VA, the closest thing to a 'legal seperation' is divorce from bed and board. So, unless she has that little court decree, she's just committing plain old fashioned adultery.
May I make a teeny suggestion? Before you get involved with another woman, it might be wise to run a back ground check on the potential friend. Just a quick public records search would at least give you a heads up that she could be married.