YOU SAID:
Shes better known for the things that she does on the mattress
INTO JAPANESE
彼女はマットレスの上で行うことでよく知られています
BACK INTO ENGLISH
She is well known for what she does on her mattress
INTO JAPANESE
彼女はマットレスの上で何をしているかでよく知られています
BACK INTO ENGLISH
She is well known for what she does on her mattress
You've done this before, haven't you.