I really wonder what story they told LE. Obviously, they couldn't lie about an injured babysitter to them if there wasn't one. Are they claiming that some intruder broke into the house, killed Grace, and ran out? Are they claiming that it was an accident? We know Grace was suffocated, but did she really have tape on her mouth? Tape would fit with a crazed home invasion story, but wouldn't make sense if they wanted to claim it was an accident. I really wonder if LE is having a hard time proving that someone in the house killed Grace, rather than it was an accident. For example, if they are claiming that Grace climbed into some sort of trunk, closed the lid, and suffocated...how would they prove that no that didn't happen, she was suffocated with a pillow?