帰国子女があの組の中に溶け込むのは難しいよ。
It's difficult for returnees to blend in with that class.

彼女は良家の子女のように見えた。
She looked like a daughter of a good family.

彼女の行儀作法は良家の子女のそれではない。
Her manners are not those of a lady.

近頃日本の帰国子女が増えている。
The number of Japanese students returning after life abroad has been increasing as of late.