Simplified, but if CEO's want to make the big bucks when their developers create some great new feature, they should also stop making the big bucks (resign) when their developers mess up.
But here the CEO resigned with six months extra pay from the day she leaves, which is in six months from now. so she'll have six months where she's still employed, and paid normally, to search for a new job. Which she should be able to find without problems in that time frame. She'll still receive an additional six months of pay after that, not something most people (i.e. normal people) could hope for.