I strongly discourage moving back in together if there has been no significant progress in her making amends, such as showing remorse and taking responsibility for her actions.....instead of blaming the H. If there is no commitment, then there's little chance of success. Piecing is not for the weak!
I think your W needs an entirely different mental attitude toward you before you take her back. She sounds as if she's doing a big favor for you! Do not let her come back under the terms she gave. It should be under your terms, since she walked out. You are just the safety net for her. Don't let her back too easily, or she'll be gone again.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
