YOU SAID:
she would merengue and do the chacha
INTO JAPANESE
彼女はメレンゲとチャチャをするだろう
BACK INTO ENGLISH
She will play meringue and cha-cha.
INTO JAPANESE
彼女はメレンゲとチャチャを演じるでしょう。
BACK INTO ENGLISH
She will play meringue and cha-cha.
That didn't even make that much sense in English.