Please do a quick recap, that is, if you can...you're living apart, does she have the house and are you funding anything?
I, too saw her on Yahoo, it's really gutsy, when you love someone and then they are out for the display of others.
You know, if you had a close friend that could set her up online, as if he was interested, then he could find out what her intentions are; does she plan to get D, what did happen that she left her husband, what does she plan to do is she finds someone, etc...that might give you more of an insight.
I hope you will try to work on getting her back, b/c you seem to really love her...but right now, the anger is really killing you. That, I understand, righteously so...
If you feel that the finances are the issues, then what would it take to resolve them? What can you do to help the situation?