Published: Dec 13, 2012 2:07 PM EST

MIAMI (AP) - A judge has denied a mistrial in the case of a woman charged with killing missing South Florida foster child Rilya Wilson.
    
Attorneys for 66-year-old Geralyn Graham took exception Thursday with a prosecutor's question to a detective asking if police checked out whether "little green men" from space may have abducted 4-year-old Rilya. Circuit Judge Marisa Tinkler Mendez called the question inappropriate but denied the mistrial motion.
    
Testimony then resumed.
    
Rilya went missing in late 2000, but her disappearance wasn't discovered by the state for over a year. Homicide detectives are testifying they found no physical evidence at Graham's home and located no witnesses. Rilya's body has never been found.
    
Graham was eventually charged with Rilya's murder after jailhouse snitches say she confessed to them. Graham insists she is innocent.

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