I know there is nothing she can do other than show some compassion that these animals are suffering due to human error rather than being annoyed that her day would start off badly. Working in the veterinary industry, I know that bad news has to be given, but if done correctly and with some true compassion, the blow is softened. By acting as if these things are minor inconveniences, you make the affected party more upset and more hopeless.
She has a good job with benefits, in an air conditioned building. She has no reason to act like an insensitive ***.
And she could've given me a working customer service number.
Just like when the kitchen messes up a food order but the irritation is voiced to the waiter- she isn't responsible for this error but since she is the first line and face of the company in question it IS her job to handle these complaints graciously.