Well, wait a few days until you've slept and are calmer and then don't allow her her comfortable life if that's what you decide. You can stay open to working on this in the future if you decide to and still not have her living under your roof disrespecting you.
You might want to ask a question in the infidelity section of this board.
Sorry you are going through this. I think it's normal to obsess over the details for awhile. Don't beat yourself up about it. Just try to do something positive unrelated to her b.s. today.
