In this case they even tried to do the right thing and offered her compensation. She declined, probably because she thought it wasn't enough money (never underestimate the vanity/cupidity of women).
In the end they showed that they were just being "nice": they don't even need her work output of voice acting, they can just create a similar enough version just fine.
And the fact is that it isn't her voice. She didn't do the work, she refused. It also should be clear that there is bound to be another woman in the world with similar physical characteristics that has a voice close enough to her. She just cannot own a particular voice characteristic, she could have owned the work associated with her voice acting, but she refused.
The whole outrage is just dumb, I really hope she loses in court because otherwise it is going to set a very problematic precedent.
They are enough people in the world profiteering from various position without actually doing the equivalent work value that we don't need to get them even more money.