inappropriate behavior

please answer the following. 
Metropolitan government of Nashville and Davidson County, Tennessee (Metro), began looking into rumors of sexual harassment by the Metro School District’s employee relation’s director, Genehughes. Veronica Frazier, a metro human resources officer asked Vicky Crawford, a Metro employee whether she had witnessed “inappropriate behavior” on the part of Hughes. Crawford described several instances of sexual harassing behavior. Two other employees also reported being sexually harassed by Hughes. Metro took on action against Hughes, but soon after completing the investigation, the company fired Crawford and the two other employees, accusing Crawford of embezzlement. She filed a suit in a federal district court against Metro, claiming retaliation under Title VII. 
What arguments can be made that Crawford’s situation does or does not qualify as a retaliation claim under Title VII?