My brother-in-law and his wife often argue, and every time they argue, the wife goes back to her parents' house.

But after a few days, the wife comes back on her own. Over time, the brother-in-law feels quite sorry for his wife.
This time after an argument, he went to pick her up. When they arrived at the father-in-law's house, the father-in-law excitedly said: "Oh, it's been over half a year since you guys came back. Where's my daughter? Why didn't she come back with you?"