My first thought is that if she's unhappy, she should be the one to leave. You're not unhappy...so I wouldn't leave.
In the meantime, DB your butt off. Where have you backslid? Have you slacked off GAL? That's where I find my biggest backslides. Make yourself happy, and let her spin.
But yeah, definitely don't leave the house. IF she decides to proceed towards D, you leaving will impact custody, visitation, and support in many states. She's unhappy? Let her go.
SD
Me: 40 H: 43 H had EA from 2/06-9/06 Bomb 5/06 Piecing since 9/2006 3/2008: Boundary setting 7/2009: Boundary crossing~dropped my own bomb. 8/2010: Marriage finally on track!