She started out as a kind of joke/example of the "most common super power" trope. But, as I thought about her, I developed a story for her that fits her in with my existing universe. I'm seriously thinking of doing some kind of comic project with her.
LOL. Now I understand the "All this..." reference. Doing a comic would be a great idea for her. Maybe produce a 6 page mini-comic story or two featuring her (a comic book version of a short story) to guage interest - maybe even posting them for free on Facebook or something. If it takes off, you could Kickstart a whole comic, and then bundle these stories up with it in print form through Ka-Blam or something.
My brain is already off and running on world-building. Luckily, she fits within my existing Heroblog universe, and I don't have to recreate the world just for her. In keeping with the Power girl homage that she was intended to be, she's sort of the "spiritual cousin" of the HeroBlog U hero, Apex. I have a story worked out, I just have to make the time to draw and write it.