How about serving the sentences she was responsible for? Even if she served 1 day for every sentence that was a result of her intentional tampering of the evidence, she would be serving life.
If our system was set up to rehabilitate, that would be great, but it isn't. As long as she remains un-rehabilitated, she should be kept locked up. Not out of some sense of justice or for retribution, but simply to keep her from harming others again.