See? It’s distracting.
They’re going to start calling me The Cowgirl or something.
True. On my planet of origin, we have canine overloads and even we superheroines have to obey them. 
You could trick the name out a bit and go by Reverse Cowgirl.
I came to the conclusion a while back that there was a double standard at work with “girl”, and that it’s not fair. Adult women should not be called “girl” in any situation where an adult man would not be called “boy”. And while there are superheroes named ____ Boy (or Lad or whatever), they’re all minors. Nobody would ever call the adult Clark Kent “Superboy”, nor the adult Bruce Wayne “Batboy”, so why do Kara Zor-El and Barbara Gordon get “Supergirl” and “Batgirl”?
Because these are comics aimed at teenaged boys.
In the 1960s. When we hadn’t yet gotten worked up about these issues.
The fact is that English is loaded with suffixes (& prefixes?) that denote a feminine variant which are also used for a diminutive variant. With all that implies. To be sure, e.g. “-ette” is becoming passe, but it’s not gone yet.
You’re definitely right with the Babs Gordon Batgirl, who was introduced as a 20something college student and aged to at least her late 20s. But Kara was introduced as a 15-year-old, and by the time the original died was no more than 22. Subsequent versions have generally been teenagers. The Peter David version was an adult and really should have been Superwoman, but there were trademark protection issues. The Matrix version wasn’t human enough to make a judgment about her maturity.
But reversing would make the hair go oom oom. And that’s just silly.
‘lowing blonde hair’! OMG I’ve got hair that’s infrasound enabled! High Five!
Maybe you hadn’t.
You were hanging with Master Blaster, weren’t you?
Do cows do infrasound? They’re not on the wikipedia list.
Hey, wiki says: “One study has suggested that infrasound may cause feelings of awe or fear in humans.” I like that as a superpower.
Whales are the animal most known for infrasound. And I am NOT going to put up with Whale Girl. Whale Woman, maybe.
My office gave me a new nickname today–it used to be “honey badger” but there were conflicts w/ the new male employee who was also called “Honey Badger” and I didn’t even really care that much so I ceded the right to be called Honey Badger to him. Then there was a long string of nicknames that didn’t sitck…until today.
I am now: BABE. Bad @** Bitch, Everday.
So don’t call me Golden Girl. I’m not Babe, I’m “The BABE”.
“I am not a bitch.
I am the bitch.
And that is ‘Ms. Bitch’ to you.”
Mooing hair may be the weirdest superpower ever. I might have to dream up a Champions character with mooing hair.
Cowgirl, last of the Oom? 
At the now defunct - and NSFW - site Naga’s Den there was a picture of Power Girl as a minotauress. Horns, hooves, human face…
Well, I mean there are characters named Super Woman and Batwoman.
After I got used to becoming a lady in order to fight crime (which would be a hell of a secret identity) I’d just adjust an earlier suggestion: Bronze. I’m tanned and tough, like the metal.
Which brings up a new wrinkle for your hypothetical. Same set up, but the woman in question is also black. Does the media follow the typical superhero naming convention for women, and add a “-girl” suffix, or does it follow the typical superhero naming convention for black people, and add “Black” as a prefix? Or does it do both? Black Golden Girl?
Could be big in Texas.
I like the infrasound hair and I like this image. Sadly, horns and hooves would require that the comic address all the people who would start screaming that I’m a devil.
It seems that the site was only offline temporarily. It’s clear from the picture that the lady is no devil:
The page itself isn’t NSFW but there are lots of pages on the site which are.
I hadn’t realized my wife was on this board…Hi Honey! Steaks for supper tonight?