I adore Alan Bradley's
Flavia de Luce series but you're probably thinking
adult female.
Sue Grafton's
Kinsey Millhone series.
Dana Stabenow's
Kate Shugak series.
Estelle Ryan's
Genevieve Lenard series.
James Lee Burke's daughter, Alafair Burke is writing a police detective series called the
Ellie Hatcher series.
Margaret Coel's
Wind River Reservation series.