I'm glad she's at home, but I know that nothing has been resolved. I want to tell her that if she is wanting a relationship me that things will have to change.
Then I strongly suggest you communicate that, and also listen to HER and her what's changed her HER thinking. Because it sounds like she's hoping to just slide back in, say "Truce!" and everything's okay, and you'll both be right back to the same dysfunctions within your marriage.
If you have any boundaries, now would be the time to lay them out, Paul.