"Convincing Liar"

You owe me $75.00 for the CZ earrings that you bought at my jewelry party,” said Linda.
“You had beautiful pieces there, but I bought a ring.”
“And a pair of earrings.”
She suddenly got vociferous as she insisted that I owed her, so I paid her.
“When I arrived home I looked through my jewelry box, but didn’t find the earrings. I told my sister what happened.
“Don’t you know that Linda is a liar? A convincing liar?”