I read a few chapters of an "amateur's" novel that they had posted on their web site. I put quotes around that because while they're not a "proper" published author, the story is really, really good. But I can't remember the name of the author, the story, the url of the web site, or even the name of the protagonist. Gah!

So.

This young adult woman, maybe in her early 20s, is studying magic at the local university. This might be London or some other western city. She's quite adept at what she does, and has done as much tinkering as her peers but with better effect. There are ...gadgets... such as rings and "wearable electronics" that can be used to focus, pool, catalyze raw magic (mana?) to improve efficiency, it's all very much regarded as any other modern branch of engineering.

The story starts with her going through the city and choosing to go down a side street, where she uses her self-made gadgets to get out getting mugged. She later somehow comes across the fact that one of the professors has a secret room where he abuses the science for his own spooky ... whatever.

Have you come across this? What's the name of it, and the url?