So my Best Friend's Sister in Law had an affair...?

Let's call the sister in law stacey. So stacey had an affair on bob (my friends brother) and now bob found out. Stacey is leaving to go somewhere for 4 months. Bob works so he's sending the kids to grandmas and grandpas. Is there a place for people that cheated on their husbands..or is stacey just having another affair....or just getting away for a while??