Again, I think your interpretation of this episode is better than the original. Thanks for a happy chuckle.
Will add to this comment later.
So now its time for my additional comments:
Seeing that Cat was back in her normal, ‘Cat’, attire, short, low-cut and skin-tight, Lois asked, “What happened? Salvation Army turn you away?”
Dejectedly, Cat said, “He married an exotic dancer.”
Stunned, Clark blurted out, “Arthur Chow?”
Cat said, “All that itchy, high-necked wool and he marries a woman who can wave hello with her navel.”
Lois quipped, “That's too bad. I had your wedding present all picked out.”
Cat’s interest was piqued. She asked, “You did?”
Lois dropped her bomb, “A set of personalized stationery. 'From the desk of Cat Chow.'”
Not very amused, Cat glared at Lois and slunk away.
This exchange is priceless!

Poor Cat! If she remained true to herself Arthur would have been hers. Hmmmm, I always wondered if the writers on the show thought of Arthur's last name simply to go along with this pun.