There may be an issue of just how much of what is said is fabricated or exaggerations. I wouldn't wave everything she says off as being incorrect but certainly for events she describes that sound very unusual, such as how her mother's boyfriend likes to lick his bodily fluids off her after ejaculating onto her. That certainly can be a possible scenario but I would have her give more information about it and as she gives information, if it seems to go straight into left field or if she seems to be lying or making up information as she goes along, then I'd wonder how much of what she said may be truthful. Ideally though, try to compare her story to the insight someone else gives, such as her mother or the mother's boyfriend. I wouldn't tell them what the daughter's exacts words were as that can land you and her into a big ugly situation so just have them provide you with some information.

Kids do know and discuss more about sex at younger ages, as well as having boyfriends and girlfriends, so I would venture to say that she is obtaining information about sex from her peers and the media.