Wyld Magic. Stand Alone Tales, #22

Bethany has spent her life running from her birth family. They summoned a star and expected her to gleam with power. She still registered as magical, but they decided that if she wasn't manifesting, they would get the power out of the next generation, and they attempted an arranged marriage. She ran. She has been running ever since. Finding a job was a trick that she had to figure out, but once she learned how to get past the resume and first scan, she was in.
Understanding what people needed and helping them settle was easy. Saving up enough to stop living in her car was tricky. While under attack, she calls an old friend. A being of light and luck who deters her attackers and gets her and her car to safety. She is swept into a world of magic and finance, where she can take on her original name and try to forget the kijin who she paid to hide it and the price that he had accepted for the spell.