Strange Girl isn't a trope anymore it's a disambigution page. I'm moving this here so some else more familiar with is work can sort out which tropes under Strange Girl this fits into.
Strange Girl - Amanda in the first book, The Headless Cupid. She dresses and acts very odd, and has a love of the occult. But she changes over the course of the series, as it turns out that her Strange Girl demeanor is just a phase.
Strange Girl isn't a trope anymore it's a disambigution page. I'm moving this here so some else more familiar with is work can sort out which tropes under Strange Girl this fits into.