When cops wanted to question a teacher about an affair with an 8th-grader, she was out of town -- at Disney World. With the student. Upon her return, 32-year-old Maria Guzman Hernandez, a 6th-grade teacher at Hialeah's Our Lady of Charity, admitted to police she'd had sex with the 15-year-old. Hernandez was charged with sexual battery on a child over whom she had custodial authority, a charge like statutory rape. The boy's mom acknowledged to police that she approved of the fucking and is under investigation for letting the teen have an affair with the teacher. Hernandez and the teen had a ''sexual relationship'' for months, and the boy told cops they had been ''sexually active'' since she started sucking his cock in March. Detective Carl Zogby said much of the couple's sucking & fucking occurred at the place the boy shared with his mom. Hernandez, who is estranged from her husband, told cops ''she was going through a lot in her life.'' Hernandez's two children attend the Hialeah school.