母親{ははおや}の元を離れて妻のところへ移るleave one's wife for: 妻を捨てて(人)の元[所]へ行くleave one's mother's breast: 乳離れするtrouble between one's wife and one's mother: 嫁姑問題{よめ しゅうとめ もんだい}