Protect yourself financially, retain an attorney, let her go, and drop the rope, and then wait until your emotions settle down a little unless she presses for divorce.
If she does that, then go ahead and proceed. Don't fight her, but protect yourself, your child, and so on.
You're going to be OK.
M-47,W-40,No kids D-filed 5/27/2010 Piecing - 10/21/2010 -=Soon to be banned=-