"The woman and her son are making breakfast."
Translation:Женщина и её сын готовят завтрак.
Свой is used to refer to the subject, so it usually cannot appear in the subject, since then the subject would refer to itself.
Note that the subject here is женщина и её сын, not just женщина.
Женщина и ее сын готовят свой завтрак = The woman and her son are cooking their breakfast.
i think it should be "своих завтрак " or "свои завтрак" . Isn't that so?
The sentence just before this was "the murderer was arrested and sent to jail" then this sentence.. what a change in emotions!