misd-agin:
"What are you doing" is also terrible comm. Be directive with specific instructions. Hopefully the standards division of the ATC management will use this as an learning example for improved standard comm standards.
Don't hold your breath. She was simply awful. I suspect she was focused on maintaining separation with Air Canada, to keep the computer snitch from going off. I also suspect she didn't even think about the rising MVAs until late in the game, because the Burbank sector of SoCal normally handles that area.
Also, Air Canada was a bit remiss by saying "Twelve Thousand" instead of "One Two Thousand."