I don't have the numbers no. She does this professionally so she should have them. She's written an eBook on this on her site as well. Save your marriage central .com
But yes, you understand the reasoning. It is important to make your spouse KNOW why you are leaving and what terms you will return under, but ya, she's advocating complete detachment.
A side effect of throwing reality full force on the two of them is that you are off elsewhere and aren't exposed to the drama directly.. she claims its healthier for the abandoned spouse.