Psycho vs Fatal Attraction

[Enola Straight]

Two adulterers have chosen a seedy motel for their latest encounter:

"I'm carrying your child...I will not be ignored!" screams Alex.

"Take a pill, honey...I'm going out for a keg run."

Meanwhile...

"Norman, those two are doing...things...in Suite#1. I wan't you to get RID OF THEM."

"But Mother, they're the first customers we've had in over 30 years! Can't we just..."

"DON'T SASS ME, BOY! If you can't do it, I WILL!!!"

Alex seethes with anger and makes her way to the shower stall, where she had secreted a butcher knife...as a shadowy figure in a matronly dress sneaks up behind her with his own knife.

Who would win?