They suspected her 20 years ago. It doesn’t say why they were able to make an arrest and charge her now when they couldn’t then.

She proved that she’s a psychopath at 21, and has been on the streets for the 20 years since then. People may have been friends with her, or even dated her in that time. They’ll be extremely freaked out now.

Missouri respiratory therapist charged with murder of patient 20 years ago (New York Daily Times via MSN)