You could agree with your wife that it's BS, and then still buy her the cupcakes. Talk about posting your own L.

But yeah, like others said, it's not unavoidable. You can block the pulse from the beam by picking up the Heavenly Shield duty action when the shields spawn alongside the white beams. Divine Ruination is the attack name, and it's the only one that's like what you describe. Even if you didn't pick up a shield, unless you're undergeared severely, it only does like 40k damage. Unless she was stacked with everyone else with it.

Also, you know, I saw you playing in a Fatebreaker normal the other day. You played just fine, and you never died once. So, with certainty, you be trollin' I know you know what you're doing.