Super Gal

I didn't know what the 'A' stood for. I soon concluded it wasn't 'Super' Gal. Possibly 'Amazing' Gal? Or perhaps 'Antidisestablishmentarianism' Gal, though that might spark debate so I put it from my mind. I finally concluded it was obvious from the beginning; 'A' Gal, for she clearly was, and I felt safer already.