YOU SAID:
hi my name is sienna je ne suis pas mechant
INTO JAPANESE
こんにちは私の名前はsiennaje ne suis pas mechant
BACK INTO ENGLISH
Hello my name is sienna je ne suis pas mechant
INTO JAPANESE
こんにちは私の名前はsiennaje ne suis pasmechantです
BACK INTO ENGLISH
Hello my name is sienna je ne suis pas mechant
That didn't even make that much sense in English.