Consider these three sentences,
1) La fratino diris, "La patrino kaj mi timas ke pluvos."
2) Mia fratino diris, "La patrino kaj mi timas ke pluvos."
3) Mia fratino diris, "Mia patrino kaj mi timas ke pluvos."

The intended sentence in English is,
My sister said, "Mother and I are afraid that it will rain."

Which of the three sentences expresses the English sentence best? Is there an even better way to express it?