It might save the tax payers some money if she was released, but we'd still be supporting her. She'd be on government assistance for everything; food, housing, healthcare. I'd rather my tax dollars go towards keeping her in prison. IMO, it really doesn't matter whether or not she (or any criminal) is a danger to society. I don't see prison as some social rehabilitation project but simply punishment for wrongdoing. She did the crime so she should do the time. There is a very simple way to stay out of prison; don't break the law. Millions of us somehow manage to do this our whole lives, and a lot of us weren't raised in perfect homes.
If we need more prisons use all those available bodies already in prison to build more. I know I'm dreaming.