There are some good articles on 911 calls and red flags contained within.
"The words people choose tell the analyst whether or not they are "committed" to what they are saying."
"When you say 'I got up at 6 o'clock,' I accept it is true. If you say 'I got up,
I think, at 6 o'clock,' I cannot accept the 6 o'clock. You didn't commit yourself to the 6 o'clock," Sapir explained.
http://www.lsiscan.com/id33.htm
911: “911, what’s your emergency”
Misty Croslin: “Hi…umm…I just woke up…and our backdoor was wide open and
I think…and I can’t find our daughter”
First, when you call 911 in the middle of the night to report a missing child, you KNOW if that child is missing when you call. You check the house, outside, you call her name, there is no "I think" about it.
Other red flags other posters have mentioned, like using the word "hi" to greet the 911 dispatcher. For anyone that has ever called 911 in an emergency, you know the first words out of your mouth is the emergency you are calling about. You are so intent on getting that piece of information out there and to LE, that nothing else is more important. Not what you were doing before, not claiming a child as your daughter when she is not...nothing.
Try to imagine that your five year old is missing in the middle of the night, even if you woke up to find that out. The pieces of information you would find critical would be giving a correct description of your child to LE. For all you know your daughter could be wandering down the road a block over, with a cop car riding by (one who has just received information about your missing child). With that hope you give the correct weight, height, color of hair,what the child was wearing, etc...You try your best to relay that information to LE. The person that had that descriptive information was the biological father and he is not cooperating. He is yelling profanities, in the background, while the 17 year old babysitter calls 911.
"I don't care if you record this", not a statement a parent, in the emergency call of their life, would make. It's certainly not what they would be thinking. Ron just knows someone stole his daughter and he's only been home for a few minutes. A parent in that situation would be more concerned that the child was outside, in the dark and cold. LE would be their best friend, not someone they would hang up on twice.