Re: red flags everywhere or am I crazy?
She said she would take a polygraph, but I know those don't work. She volunteered
Then she too, knows that polygraphs don't work. Or, she's innocent.
Either way the threat of a polygraph won't compel her to tell you anything new, and the test itself, as you know, is meaningless so forget it.
Unless she offered to take it thinking that would somehow convince you she's innocent and you wouldn't make her take one, in which case she could be guilty and she does fear a polygraph, and the threat of the test might actually get a confession out of her.
This is so twisted.