Maxperson
Morkus from Orkus
There's no prophecy there. The oracle isn't prophesizing the sacrifice, she's tricking the parents into doing what Aphrodite wants to happen. So yeah, I guess she altered the future in the same way I can if I trick someone into doing something.In fact, I'm pretty sure there are multiple times when one or more deities commandeer an oracle in order to shape the world to have the result they want. IIRC, Venus/Aphrodite specifically directs the Oracle at Delphi to tell Psyche's (unnamed) royal parents to sacrifice her, meaning she quite literally takes control of prophecy to make something happen. I know Hera does this at least once as well to some hero love-child of Zeus.

That's the thing with prophecy. The prophets don't control what they say. I would think The Fates would be behind the prophecies themselves.