YOU SAID:

she is dumb with a finer and her thumb in a shape of an l on her forehead

INTO JAPANESE

彼女は額にlの形をした細かい親指と親指で愚かです

BACK INTO ENGLISH

She is stupid with a fine thumb and thumb in the shape of l on her forehead

INTO JAPANESE

彼女は額にlの形をした細い親指と親指で愚かです

BACK INTO ENGLISH

She is stupid with a thin thumb and thumb in the shape of l on her forehead

INTO JAPANESE

彼女は額にlの形をした細い親指と親指で愚かです

BACK INTO ENGLISH

She is stupid with a thin thumb and thumb in the shape of l on her forehead