Police were called to a Coomera address on February 1 after the five-month-old girl suffered a cardiac arrest.
The girl was rushed to Gold Coast University Hospital, where further testing confirmed she had significant internal injuries, police said.
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Operation Victor Sector was formed by detectives from the Gold Coast District Child Protection and Investigation Unit after the incident.
A woman has since been charged with grievous bodily harm and will front Southport Magistrates Court on June 6.
