YOU SAID:
I know your sister wants to ♡ for her birthday!
INTO JAPANESE
私はあなたの妹が彼女の誕生日のために♡したいと思っていることを知っています!
BACK INTO ENGLISH
I know your sister wants to ♡ for her birthday!
INTO JAPANESE
私はあなたの妹が彼女の誕生日のために♡したいと思っていることを知っています!
BACK INTO ENGLISH
I know your sister wants to ♡ for her birthday!
That didn't even make that much sense in English.