become one's wife
良い娘は良い妻になるものだ。
A good daughter makes a good wife.
彼女は彼の良い妻になるだろう。
She will be a good wife to him.
いずれ妻になる
She will eventually become my wife.
— 戦争と女の顔 (2019)
似合うさ君は僕の妻になるんだよ！
It suits you. You're going to be my wife!
— きっと、うまくいく (2009)
あなたの妻になるよりはマシよ
It's better than becoming your wife.
— タイタニック (1997)
私は優れた彼の妻になる素質がある。
I have what it takes to be a wonderful wife to him.
妻になる
Become a wife
彼女はよい妻になるだろう。
She will make a good wife.