Published: Nov 23, 2011 9:46 PM EST

MIAMI (AP) - A trial date has finally been set in the murder case of little Rilya Wilson.
The 4-year-old foster child disappeared in South Florida in 2000, sparking a shakeup at the state's child welfare agency.
Wilson's foster mother Geralyn Graham will go on trial March 26. Graham maintains her innocence in Rilya's death.
Rilya's body was never found, and authorities have little physical evidence. They aren't even sure whether Geralyn Graham is the defendant's name or one of her 47 aliases.
It took 15 months for officials to discover Rilya was missing. Florida's child welfare agency has been overhauled but is still accused of lax oversight.
In February, authorities found the body of a Miami girl in her foster-turned-adopted father's car. Welfare workers had repeatedly dismissed abuse allegations against her parents.

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