No. That is not necessarily true. It was not a sexual device it was a murder device. I don't think the intruider intended to kill her, I really do believe he intended to just take her and then something went awry and so he grabbed things from the house to kill her.. Something happened to this sicko and he killed her instead of taking her. Maybe she struggled and smashed her head and he figured that there was no point in taking her then.. I don't know. But I see more that points to an intruder than a family member.