After a few near-sleepless nights I was finally able to get the cat in to the vet to be spayed Thursday morning. Medically referred to as an "ovario-hysterectomy", I refer to it as "glorious silence."
I also had her implanted with a microchip so she can be identified in case she pulls a Houdini and disappears on me. The chip itself is only about the size of a grain of rice (implanted between her shoulder blades) but I still like to refer to her as my silent bionic kitty. Give the incision about a week to heal up and she'll be back to her regular self (minus the urge to seek out prowling males for extra-curriculars.)