The Dresden Files - The Hammer Falls
High Concept: Mad Jealous Warlock
Other Known Aspects:
Mind Magic gets me what I want
Sarah Becker was once confined to the same mental hospital as Drake Beasley. She was diagnosed as a paranoid along with a slew of other minor psychiatric problems. She was released from that hospital shortly before it became plagues by White Court Vampires. At some point between that time and the present she developed some kind of magical talent.
Since that time she has become heavily involved in the Hamilton party seen and is a regular at Warehouse 51. She was dating Jerry Foster up until his disappearance. The fact that she was seen arguing with several other club patrons before they disappeared has lead to several people suspecting she was responsible.