YOU SAID:
I LOVE MY SLEEPY GIRLFRIEND
INTO JAPANESE
眠そうなガールフレンドが大好きです
BACK INTO ENGLISH
I love my sleepy girlfriend
INTO JAPANESE
眠そうな彼女が大好きです
BACK INTO ENGLISH
I love how sleepy she is
INTO JAPANESE
彼女の眠そうなところが大好きです
BACK INTO ENGLISH
I love how sleepy she is
That didn't even make that much sense in English.