Also, I was trying to think of examples for Valda where the reflexive свой does NOT relate back to the nominative subject, as it normally must do according to strict grammar rules. Cf. Он имеет свою машину -- in which the reflexive pronoun свой DOES relate to the nominative subject он. But this "correct" sentence means the same as the colloquial У него есть своя машина, "he has his own car" -- in which своя (nominative and feminine) grammatically agrees with машина, but "logically reflects back" to the "him" in у него.