This is the Case of Ana Cardona, who was convicted for the murder of her 3 year son Lazaro Figueroa. The boy was beaten for approximately 18 months by his mother and with the help of her girlfriend at the time Olivia Gonzalez-Mendoza.
References:
Miami-Dade County Clerk of Court
Florida Department of Corrections
https://caselaw.findlaw.com/fl-supreme-court/1218870.html
https://www.floridasupremecourt.org/content/download/343819/file/01-1056_petition.pdf
https://www.casemine.com/judgement/us/591484fbadd7b049344bf63e
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