i'm not sure how you can utilize her or if she'd even qualify as a partner in crime. she doesn't work for the prophet but when she's bored she pops up wherever she pleases... considering she can just walk through walls. it's a long story, lol. but they would've gone to school together so if anything he would or could remember her as the ravenclaw girl who went missing for a month during her second year. i do believe they'd be a year apart. either way, she's always up for a bit of an adrenaline rush so she'd definitely do some dangerous snooping for him if he ever needed it.