Matty here! I'm posting because I am working on Romilda Vane over at discrepant. She's 23, former Gryffindor.
Basically, what I have for her is that she's of a pretty well off family her dad owns a Real Estate Company, her mother is a columnist for Witch Weekly, and she's felt the pressures of being the only child and daughter of them for awhile. And she's done pretty well. She was an investigator for the DMLE, but recently was fired for basically going way off case with an investigation and disobeying orders. Think something like... in True Detective when they were stuck and Rust kept doing shit he wasn't supposed to. So because she's young and pretty well known because of her family, she was basically threatened to step down. And she's embarrassed and mad and doesn't wanna talk about it. Unless she does, then she'll basically go on a rant about corruption. So now she "works" for her father's company, but basically it's busy office work that she hates and kind of half does. But she mostly just goes into the buildings her father owns and bothers the people inside. She's going through a bit of a rough patch.
ANYWAY, she needs some connections. Either some from the high-class-high-money world of her parents (which she kind of despises, but also can't help but enjoy) or some from school (she was in the tail end of the DA and fought in the Battle), she basically has had a crush on everyone ever, so that's also a connection. She likes to bother people, so she needs some reasons to. :P