My wife gets out of Alcohol rehab in a few days?

My wife wants to stay at her parents house one day a week once she gets out so she can have a day without the stress of our children and me. This bothers me for some reason and I cant really see the reasoning. Can somebody explain to me why this should be okay?

: http://alcoholdrugstreatment.info/my-wife-gets-out-of-alcohol-rehab-in-a-few-days