One day Anna's dog completely destroyed her apartment
That's a terrible news. Did the dog do anything to your apartment?
No, he just wrecked hers entirely
People should make sure that their dogs behave, and that they don't destroy things.  A good dog trainer can help Anna to control her dog's impulses.
I'm going to wait until Anna comes back. Maybe she'll finally take responsibility for her dog and actually train it.
Let her see the destruction. Seeing is believing and hopefully it will change her mind about dog training.