And she has a tell. She giggles(nervous laughter) when she is about to tell a whopper.
It’s the ‘tell’ with anyone who is pathologically insecure and aware of their inadequacies.
The giggle also buys time...until they can compose what they THINK is the right thing to say....AS IF no one will notice.
I had a neighbor who went through Alzheiemers and he would preface every statement with a manic laugh because he was trying to appear reasonable and aware of the actual conversation.