At first when reading this I thought the title was "The GIRL with the SEE-THROUGH BLOUSE!"
And I thought,
"Hey, Superman's getting GOOD!"
When I realized I had misread, I was disappointed, but my excitement came back when I realized it was Maggin on the job. He really seemed to get who Supergirl was about in this story, simultaneously loathing and loving her specialness and superpowers. Maggin had a profound insight into Supergirl, which is rare for a male writer with a female character (the other exception I can think of being Steve Englehart and Kurt Busiek, whose most interesting characters were female). Did he ever do any other Supergirl stories? Because he truly understood the character and her personality, and how distinct she was from Superman.