53 years?
Imagine all the money saved if they just executed her immediately after she was found guilty.
That's 53 years of money, time, manpower, energy, supplies, medical treatment and so on wasted on a murderer.
If you go and knowingly, willingly, and intentionally kill someone or take part in it then once you're found guilty you should be executed within 48 hours by guillotine.
Guillotine is perfect. Once it's paid for all you have to do is clean it and maintain it and it's a one and done. Head comes off and it's over. Just put it in a stainless steel room and all you have to do is hose it out after, spray some sanitizer and call it a day.
No news briefings, no media coverage beyond "soandso has been found guilty and sentenced to death", no appeals, no nut house, no death row. Cremate the body after, flush the ashes.