YOU SAID:
my brother likes to play with my sisters cat and she plays with his hose
INTO JAPANESE
私の兄は私の姉妹の猫と遊ぶのが好きで、彼女は彼のホースで遊ぶ
BACK INTO ENGLISH
My brother likes to play with my sister's cat and she plays with his hose
INTO JAPANESE
私の兄は私の姉の猫と遊ぶのが好きで、彼女は彼のホースで遊ぶ
BACK INTO ENGLISH
My brother likes to play with my sister's cat and she plays with his hose
That didn't even make that much sense in English.