Just a little helpful therapy play - no harm intended. I don't know why you have to meet OW next Saturday, must have missed it. But if it's a public function, stay as calm as you can, take a long hot bubble bath. Lay back in the bubbles, and imagine knocking her head off. See, you smiled, didn't you? Think of this fantasy often, and when you meet her, hold onto that fantasy. You'll smile your way through it.
JMO- Met her in July my a$$. I may have been born on a Wednesday, but it wasn't this Wednesday. ((HUGS Irish))