I've been wanting her best friend/past partner-in-crime. Maybe recently returned from living in Paris, or something? They got into too much trouble together, and now it's dialed down to just having a bit of fun. But there's always potential for them fall back into their wild sides, because they are for sure bad influences on each other.
As far as guards? I would say coming in with a personal bodyguard would be a cool connection for anyone, and close enough that they would be familiar with the other characters! Speaking of staff, Cecily here could also use her ridiculously brilliant publicist as well.