Given the ethics of your soon to be ex, I would be even more concerned that she does not suddenly accuse you of domestic violence and get you barred from your own home. I have seen it happen. I would move the most valuable items out of there for safe keeping til she is gone and either walk very softly or stay somewhere else until she is gone. This has danger written all over it. You could report the thefts to the police, but that would just tend to escalate the problem, and you are vulnerable here.