i don't have specifics in mind juuust yet (waiting on my coffee!), but i can offer exes or best friends (... or an unlikely mix of both?) for a "we're very close personally but don't chase professionally" type vibe? camile here is an auror with a 60's housewife vibe to throw off the scent of her silly little Secrets, so anybody evil but with an eye for mortgage finances and nice shoes is someone she can understand!