mercedes nichols. >> ooh, yeah, baby. ooh, yeah. >> the beating is an ambush. tori had spent a week at nichols' place in lakeland, florida, because she allegedly is having problems at home. so why would mercedes and five other girls turn so viciously on tori? polk county sheriff grady judd. >> this all erupted as a result of our victim supposedly trash talking these other girls on her myspace account and through text messages. >> you can hear one of the girls talking about the myspace messages. >> no, you said that, tori. i have the message on myspace. still! >> tori, you lying. i read it. >> you talk [ bleep ] on myspace all the time. >> yeah, yeah. >> according to court documents, tori tells prosecutors she believes the brutal attack was because mercedes was also angry at her for borrowing a hairbrush and a razor from the house without telling her. it may sound unbelievable, but it apparently sparks this