She had tears in her eyes, her younger brothers hand round her neck, and she died...seems fairly accurate to me considering it was a prophecy from a fortune teller.
Last time i checked most fortune tellers & prophecies are misty and vague, if they know that was the time of her death it would be reasonable from a snapshot to believe Jaime killed her. They're not watching it crystal clear on a TV screen ffs.
Unless of course you were just looking forward to seeing one of the two choke the life out of her and now annoyed she got a relatively clean death. Hey, maybe they will still be alive under the rubble and on Sunday Jaime will choke her out so she doesn't suffer drought and starvation death...